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St Mary Parish City Zoning Code

CHAPTER 3

Site Design and Development

Sec. 3.1.1 Purpose of Chapter

  • Purpose. The purpose of this Chapter is to establish standards regarding the density and intensity of development, and for the amount of common open space or landscaped area that must be provided for different development types. Land subdivision is the first step in the process of Parish development. Once land has been cut into streets, lots and blocks, and publicly recorded, the correction of defects is costly and difficult. Subdivision of land sooner or later becomes a public responsibility in that roads and streets must be maintained and various public services customary to urban areas must be provided. The welfare of the entire community is thereby affected in many important respects. These subdivision regulations are adopted for the following purposes:
    1. To promote the public health, safety and general welfare of the jurisdictional area.
    2. To provide for adequate light, air and privacy; to secure safety from fire, flood and other dangers; and to prevent overcrowding of the land and undue congestion of population.
    3. To enhance the character and economic stability and encourage the orderly, beneficial improvement of the jurisdictional area.
    4. To conserve the value of land, buildings, and improvements throughout the jurisdictional area and to minimize detrimental conflicts among land owners.
    5. To guide public and private policy and action providing for transportation, water, sewerage, schools, recreational areas, and other public requirements and facilities.
    6. To provide for the most efficient traffic movement throughout the jurisdictional area.
    7. To establish reasonable standards of design and procedures for subdivisions, resubdivisions and developments; to further orderly layout; and to ensure proper legal descriptions and proper monumenting of land.
    8. To ensure that public facilities are available and will have a sufficient capacity to serve the proposed subdivision or development.
    9. To prevent the pollution of air, streams and ponds; to assure the adequacy of drainage facilities; to safeguard the water table; and to preserve the integrity, stability, beauty and value of the jurisdictional area.
    10. To preserve the natural beauty and topography of the jurisdictional area, and to ensure appropriate improvement with regard to these natural features.
    11. To provide for open spaces through efficient design and layout of the land.
    12. To encourage subdivision and development design which would maximize the conservation of all forms of energy.
  • Policy. It is, therefore, to the interest of the public, the subdivider/developer, and future owners, that subdivisions and developments be conceived, designed, and improved in accordance with sound rules and proper minimum standards. Land to be subdivided or developed shall be of such character that it can be used for building purposes without danger of health, fire, flood, or other menace. Land shall not be subdivided or developed until proper provisions have been made for drainage, water, sewerage, other public utilities, and for other required public services.

    • Effective on: 11/1/2013

    Sec. 3.1.2 Application of Chapter

  • Generally. In general, the standards of this Chapter apply primarily to the development of individual sites and property in conjunction with the other standards of this UDC.
  • Subdivision Design and Development. Division 3.2, Subdivision Design and Land Development, sets out the basic standards that apply to the layout and design of a subdivision or a site plan. Alternatives may apply to specific types of development.
  • Design and Layout of TNDs. Division 3.3, Traditional Neighborhood Development Design and Layout, sets out alternate standards specific to traditional neighborhood developments ("TNDs").
  • Manufactured Home Parks and Subdivisions. Division 3.4, Manufactured Home Parks and Subdivisions, sets out the provisions for the design and configuration of new manufactured home parks or subdivisions and the required maintenance of existing manufactured home parks or subdivisions.
  • Parking and Loading. Division 3.5, Parking and Loading, sets out the number of required parking and loading spaces and establishes the minimum design and maintenance requirements. The provisions set out in Division 3.5, Parking and Loading, apply to:
    1. All new development; and
    2. Expansions of existing development and changes of use that require additional parking; provided that the additional parking is equal to the extent of new demand created by the expansion or change of use.
  • Streets, Sidewalks and Utilities. Division 3.6, Streets, Sidewalks, and Access, sets out the policy and design objectives for streets, sidewalks, and minimum access requirements.
  • Utilities. Division 3.7, Utilities, sets out the minimum design requirements for the installation of utilities.
  • Floodplain Management and Prevention. Division 3.8, Floodplain Management and Flood Protection, sets out the technical standards for development within areas of special flood hazard within the Parish.
  • Drainage. Division 3.9, Drainage, sets out the minimum design requirements for the installation of drainage facilities.
  • General Environmental Standards. Division 3.10, General Environmental Standards, sets out the standards for enforcing unreasonably amounts of noise, vibration, smoke emissions, odors, toxic or noxious matter, nuclear and electromagnetic radiation, heat and glare.
  • Landscaping and Buffering. Division 3.11, Landscaping, sets out the landscaping and buffering standards that apply to all new development and redevelopment, or substantial improvements to existing sites or buildings, with the following exceptions:
    1. Individual existing lots of record that are used for single-family or two-family dwellings; and
    2. Sites which are proposed for redevelopment or substantial improvement, where due to the geometry of the site or existing improvements, installation of landscaping in full compliance with Division 3.11, Landscaping, would be impracticable or an unreasonable financial burden on the applicant, in which case the Parish may approve a lesser landscaping requirement, provided that the reduction of landscaping standards is only to the extent necessary to make the installation practicable or financially reasonable.

    • Effective on: 2/4/2014

    Sec. 3.2.1 General Provisions

  • Generally. These regulations shall be applicable to all developments and to the subdivision of all land within the unincorporated areas of the Parish for purposes other than agricultural. Every subdivision of land into two or more tracts, unless above excepted, shall be shown on a plat, and submitted to the Director through his staff, for approval or disapproval. No public money shall be expended for maintenance purposes on streets, drainage structures or utilities in a subdivision that has not been accepted by the Parish Council.
  • Conformance to Applicable Rules and Regulations. In addition to the requirements established in this UDC, all subdivisions shall comply with the following laws, rules and regulations:
    1. All applicable statutory provisions.
    2. The Comprehensive Plan, Parish base map, Parish design and construction procedures and capital improvements program, if existing, including all streets, drainage systems, and parks shown on the land development plan and the major street plan as adopted.
    3. The special requirements of these regulations and any rules of the health department and/or appropriate state and federal agencies.
    4. The rules of the highway department if the subdivision or development abuts a state highway or roadway.
    5. The standards and regulations adopted by the Director, Planning and Zoning Commission, and Parish Council.
  • Character of the Land. Land which the Director finds to be unsuitable for subdivision or development due to flooding, improper drainage, adverse earth formation or topography, utility servitudes, or other features which will be potentially harmful to the safety, health, and general welfare of the present or future inhabitants of the subdivision and/or its surrounding areas, shall not be subdivided or developed unless adequate methods are formulated by the subdivider or developer to solve the problems created by the unsuitable land conditions. Said methods shall be approved by the Director and the Parish Council upon recommendation of the Department of Public Works. If the problem is not resolved, such land shall be set aside for uses that will not involve the danger.
  • Council Acceptance Required for Recordation. The clerk of court shall not record a plat of a subdivision or a development without the acceptance of the Parish Council. The plat for recordation must bear the original signature of the Director in red ink, indicating the Parish Council's acceptance.
  • Building Permits Required. Building permits will be required for all construction within the unincorporated area of the Parish, whether the construction is residential, commercial or industrial. No building permit shall be issued for the construction of any building or structure located in a development or on a lot in a subdivision sold in violation of any provision of these regulations.
  • Front Foot Assessments Permitted. Nothing herein shall prohibit the levy of front foot assessments for the construction of streets, drainage or other utility services required by this UDC; provided however, the subdivider/developer shall not otherwise be relieved of any duty or responsibility herein.

    • Effective on: 11/1/2013

    Sec. 3.2.2 Resubdivision of Land

  • Procedures for Resubdivision. If any change in an approved or recorded subdivision plat would affect the layout of any public street, alley or road (hereinafter referred to as public way) shown on such plat, or area reserved thereon for public use, or any lot line, or if it would affect any map, plan, or plat legally recorded before the adoption of this UDC, such amendment shall be approved by the Director by the same procedure, rules and regulations as for a new subdivision.
  • Procedures for Subdivision where Future Resubdivision is Foreseen. Whenever a parcel of land is subdivided and the subdivision plat shows one or more lots containing more than one acre of land or double the minimum required area and the Director has reason to believe that any such lot(s) may be resubdivided into smaller lots, the Director may require that the subdivision of such parcel of land allow for the future opening of public ways. The Director may also require that dedications providing for the future opening and extension of such public ways be indicated on the plat.
  • Conditions. The regulation of the subdivision and development of land and the attachment of reasonable conditions thereto are administered by the Director. The subdivider/developer has the duty of compliance with reasonable conditions imposed by the Director for design, dedication, improvement, and restrictive use of the land so as to provide for the physical and economical development of the jurisdictional area and for the safety and general welfare of future plot owners and of the community at large.

    • Effective on: 11/1/2013

    Sec. 3.2.3 Subdivision and Street Names

  • Subdivision Name. The proposed name of the subdivision or development shall not duplicate, or closely approximate phonetically, the name of any other subdivision or development. The Director shall have final authority to designate the name of the subdivision which shall be determined at the conceptual phase.
  • Street Names. The conceptual plat as submitted by the subdivider or developer shall indicate names of proposed streets. The Director reserves the right to reject proposed street names to prevent duplication within an area served by a post office, school, fire company, etc. A street which is, or is planned as, a continuation of an existing street or road shall bear the same name.

    • Effective on: 11/1/2013

    Sec. 3.2.4 Property Owners' Association Required

  • Generally. Any subdivision or land development which establishes areas under common ownership requires a property owners' association and a recorded declaration of covenants, conditions, and restrictions ("CCRs") to oversee immediate and long-term management and maintenance responsibilities. Examples include, but are not limited to, common open space or park areas, drainage and retention ponds, entrance monuments, etc.
  • Property Owners' Association. If required by this UDC, or required as a condition of approval, or by the nature of establishing areas under common ownership or management, the applicant shall incorporate a property owners' association that will bear responsibility for ensuring continuing compliance with these regulations, the conditions of subdivision or site plan approval, and long-term maintenance. The Parish Attorney shall review the documents only for the following provisions:
    1. Membership in the property owners' association shall be mandatory for all owners of property in the subdivision or condominium;
    2. The property owners' association shall have lien rights with respect to unpaid dues;
    3. The property owners' association shall be permanent; and
    4. The property owners' association shall have all responsibilities required by these regulations (e.g., ownership and maintenance of common elements).

    • Effective on: 2/4/2014

    Sec. 3.2.5 Covenants and Restrictions

  • Generally. Conditions and requirements of development approval that require ongoing efforts of tenants or successors in title shall be included in a declaration of covenants, conditions, and restrictions (CCRs) for the property that shall be recorded in the public records in the chain of title for the property at the applicant's expense. The applicant shall provide proposed CCRs to the Parish:
    1. Upon filing the application for final approval; or
    2. If no plat approval is sought, before the issuance of any permit that directly authorizes development (development approvals that require CCRs shall be contingent upon approval of the CCRs document).
  • Plat Annotations. Requirements regarding maintenance of common areas or operation and maintenance of drainage facilities shall be summarized on the plat and set forth in full in the declaration of CCRs, which shall be referenced on the plat.
  • Self-Imposed Restrictions. If the owner places CCRs on any of the land contained in the subdivision greater than those required by this UDC, said CCRs shall be recorded with the Parish clerk of court prior to the sale of any lots and there shall be noted on the subdivision plat that said CCRs have been recorded. The Parish shall approve only those CCRs that relate to the development approval, and its right of enforcement shall extend only to those matters and matters that substantially bear upon them. The Parish will not seek to intervene in purely private disputes about CCRs.

    • Effective on: 11/1/2013

    Sec. 3.2.6 Streets

  • Alignment of Subdivision Streets with Existing Streets.
    1. Streets shall be configured as required by Section 3.6.2, Street Standards.
    2. Streets shall, to the extent practicable, align with existing streets, and be given the name of the streets with which they align, or shall be offset the minimum distance.
  • Alignment of Local Streets with Arterials and Collectors. Generally, local streets shall be either:
    1. Perpendicular to arterials or collectors; or
    2. Loop streets, reverse frontage roads, or dead-end streets/cul-de-sacs (which are limited by Section 3.6.3, Dead-End Streets. See Figure 3.2.6, Local Street Orientation.
    • Figure 3.2.6
    Local Street Orientation
    Illustrative Example of Local Streets (e.g., cul-de-sacs, loop roads, and reverse frontage roads).
    1. Width of Public Ways. The minimum width of public street rights-of-way in subdivisions shall be established according to the functional classification of each street, pursuant to Section 3.6.2, Street Standards.
    2. Grades and Curves of Public Ways. The minimum requirements for grades and curves are established pursuant to Section 3.6.2, Street Standards.
    3. Street Layout.
      1. All streets shall be properly integrated with the existing and proposed system of thoroughfares and dedicated streets.
      2. All thoroughfares shall be properly related to special traffic generators such as industries, business districts, schools, churches and shopping centers; to population densities; to anticipated traffic volumes; to existing and proposed streets and roads; and to the pattern of existing and proposed land uses.
      3. Minor or local streets shall be laid out to conform as much as possible to existing topography, to discourage use by through traffic, to permit efficient drainage and utility systems, and to require the minimum number of streets necessary to provide convenient and safe access to property.
      4. Proposed streets shall be extended to the boundary lines of the tract to be subdivided and connect with streets in adjacent properties unless prevented by topography or other physical conditions, or unless in the opinion of the Director such extension is not necessary or desirable for the coordination of the layout of the subdivision with the existing layout or the most advantageous future improvement of adjacent tracks.
      5. In business and industrial developments, the streets and other accessways shall be planned in connection with the grouping of buildings, location of rail facilities, and the provision of alleys, truck loading and maneuvering areas, and walks and parking areas so as to minimize conflict of movement between the various types of traffic, including pedestrian.
      6. In commercial or rental developments, the developer shall demonstrate to the satisfaction of the Director that the proposed parcels shall be suitable in area and dimensions, that the street and block pattern proposed is specifically adapted to the uses anticipated, and that the proposed layout takes into account other land uses in the vicinity. In addition, streets carrying nonresidential traffic, especially truck traffic, shall not normally be extended to the boundaries of adjacent existing or potential residential areas.
    4. Reserve Strips. The creation of reserve strips shall not be permitted adjacent to a proposed street in such a manner as to deny access from adjacent property to such street.

    Effective on: 2/4/2014

    Sec. 3.2.7 Blocks

  • Generally. The length, width, and shape of blocks shall be determined with regard to the following:
    1. The provision of adequate building sites suitable to the special needs of the type of use contemplated;
    2. The required lot widths and lot areas for the development;
    3. The need for convenient access, circulation, control, and safety of street traffic; and
    4. Limitations and opportunities of topography with respect to streets, utilities, and views.
  • Block Length and Width.
    1. The lengths, widths and shapes of blocks shall be such as are appropriate for the locality and the type of subdivision contemplated, however, block length in residential areas shall not exceed the lengths specified in Table 3.2.7, Block Length, nor be less than 300 feet in length unless a variance is needed to connect to and continue streets in an adjacent area. Blocks may exceed the lengths in Table 3.2.7, Block Length, provided that the blocks are the minimum additional length necessary to achieve a stated design objective, and either: (See Figure 3.2.7A, Illustrative Block Length)
      1. The block traverses a span of open space that is wider than the distance specified in the table; or
      2. Mid-block access is provided that allows pedestrian circulation from the block to another block (or, in TND "Center" subdistricts, to parking areas behind buildings). Such access shall be provided at intervals of not less than 300 feet, including street intersections.
    2. Blocks shall have sufficient width to provide for two tiers of lots of appropriate depths. Exceptions to this prescribed block width are permitted:
      1. Where adjacent to major streets; railroads, waterways, or adjacent subdivisions;
      2. Where reverse frontage lots are located along an arterial or collector street;
      3. Where such an arrangement is prevented by the size or other inherent site conditions of the property; or
      4. Where lots are arranged in a cluster format that promotes visual access to common open space by reducing back-to-back residential lots.
    • Table 3.2.7
    Block Length
    Development Type Maximum Block Length Is Lesser Of . . .
    Max. Lots Accessed
    on One Side of Street    		 Max. Distance Between Intersections or Significant
    Curves, Jogs, or Offsets
    Standard Residential Subdivisions; Clustered Residential Subdivisions (all types); Mixed-Housing Neighborhoods 9 single-family detached; or
    15 single-family attached; or
    15 multiple-family footprints plus required building side yards    		 1,200 ft.
    TND "Center" subdistrict N/A 500 ft.
    TND "General" and "Edge" subdistricts N/A 650 ft.
    Table 3.2.7
    Block Length
    Development Type Maximum Block Length Is Lesser Of . . .
    Max. Lots Accessed
    on One Side of Street    		 Max. Distance Between Intersections or Significant
    Curves, Jogs, or Offsets
    Standard Residential Subdivisions; Clustered Residential Subdivisions (all types); Mixed-Housing Neighborhoods 9 single-family detached; or
    15 single-family attached; or
    15 multiple-family footprints plus required building side yards    		 1,200 ft.
    TND "Center" subdistrict N/A 500 ft.
    TND "General" and "Edge" subdistricts N/A 650 ft.
    Table 3.2.7
    Block Length
    Development Type Maximum Block Length Is Lesser Of . . .
    Max. Lots Accessed
    on One Side of Street    		 Max. Distance Between Intersections or Significant
    Curves, Jogs, or Offsets
    Standard Residential Subdivisions; Clustered Residential Subdivisions (all types); Mixed-Housing Neighborhoods 9 single-family detached; or
    15 single-family attached; or
    15 multiple-family footprints plus required building side yards    		 1,200 ft.
    TND "Center" subdistrict N/A 500 ft.
    TND "General" and "Edge" subdistricts N/A 650 ft.
    Table 3.2.7
    Block Length
    Development Type Maximum Block Length Is Lesser Of . . .
    Max. Lots Accessed
    on One Side of Street    		 Max. Distance Between Intersections or Significant
    Curves, Jogs, or Offsets
    Standard Residential Subdivisions; Clustered Residential Subdivisions (all types); Mixed-Housing Neighborhoods 9 single-family detached; or
    15 single-family attached; or
    15 multiple-family footprints plus required building side yards    		 1,200 ft.
    TND "Center" subdistrict N/A 500 ft.
    TND "General" and "Edge" subdistricts N/A 650 ft.
    Figure 3.2.7A
    Illustrative Block Length
    Illustrative Block Length
    1. Servitude May Be Required. In long blocks, the Director may require the reservation of a servitude through the block to accommodate utilities, drainage facilities, or pedestrian traffic. Pedestrian crosswalks, not less than 10 feet wide, may be required by the Director through the center of blocks where deemed essential to provide circulation or access to schools, playgrounds, shopping centers, transportation, or other community facilities.
    2. Nonresidential Blocks. Blocks for commercial, industrial, and mixed-use areas may vary from the elements of design contained in this Section if the nature of the use requires other treatment. See Figure 3.2.7B, Illustrative Nonresidential Blocks. In such cases, safe and convenient access to the street and pathway systems shall be required. Space for off-street parking may also require similar access for employees and customers. Extension of streets and utilities shall be provided, as necessary.
    Figure 3.2.7B
    Illustrative Nonresidential Blocks
    Illustrative Nonresidential Blocks

    Effective on: 11/1/2013

    Sec. 3.2.8 Lots

  • Minimum Width. The minimum width of lots in a subdivision shall be as set out in:
    1. Division 1.6, Agricultural and Residential District Standards and Division 1.8, Nonresidential District Standards, for the applicable zoning district and development type; or
    2. A pattern book for a TND that is approved according to the standards of Section 5.4.10, Pattern Book Approvals.
  • Minimum Depth. The minimum depth of lots in a subdivision shall be:
    1. As required to achieve the minimum lot area (lot depth equals lot width divided by lot area) set out in Division 1.6, Agricultural and Residential District Standards and Division 1.8, Nonresidential District Standards, for the applicable zoning district and development type; or
    2. The depth indicated in a pattern book for a TND that is approved according to the standards of Section 5.4.10, Pattern Book Approvals.
  • Minimum Area. The minimum area of lots in a subdivision shall be as set out in:
    1. Division 1.6, Agricultural and Residential District Standards and Division 1.8, Nonresidential District Standards, for the applicable zoning district and development type for the applicable zoning district and development type; or
    2. A pattern book for a TND that is approved according to the standards of Section 5.4.10, Pattern Book Approvals.
  • Required Frontage.
    1. All lots that are not subject to a conservation servitude or used as common elements or recreational areas shall front upon an improved public street, unless it is demonstrated that a private street subdivision is approved that complies with Section 3.6.7, Private Streets.
    2. Public streets include:
      1. An existing state highway; or
      2. An existing Parish road; or
      3. A street shown upon a plat approved by the Director, accepted by Parish Council and recorded in the Parish clerk of court's office. Such street/road or highway must be suitably improved as required by Parish Council, and this UDC.
  • Lot Shape, Generally.
    1. Generally, lots shall be rectangular or "pie-shaped." All side lines of lots shall be at right angles to straight street lines, or radial to curved street lines, unless a variation to this rule will give a better street and lot plan.
    2. Corner lots shall have extra width to permit the establishment of front building setback line on both the front and the side of the lots adjoining the streets irrespective of whether the rear lot lines of said corner lots abut lots fronting on the side streets.
    3. Lots on major street intersections and at all acute angle intersections which, the Planning and Zoning Commission finds are likely to be dangerous to the traffic movement shall have a radius of 20 feet at the street corner. Where grade separation structures are proposed at the intersection of major streets, the lots and improvements in the subdivision shall be arranged so as to make adequate provisions for such structures.
    4. Lots with double frontage shall be avoided except where the Director determines that it is essential to provide separation of residential subdivisions from arterial streets.
  • Lot Shape, Alternative. Alternative lot shapes may be approved in any of the following circumstances:
    1. In General.
      1. The alternative shape does not interfere with the efficient development of other property; and
      2. The lots allow for a building envelope that is adequate for conventional building design. The building pad used meets minimum lot width where the home is to located. The Director shall require a building pad designation on the plat. See Figure 3.2.8A, Building Envelope.
    • Figure 3.2.8A
    Building Envelope
    Illustrative Building Envelope
      1. Irregularly Shaped Parcel Proposed for Development. The shape of the parcel required irregular lots in order to subdivide.
      2. Preservation of Open Space with Trapezoidal Lots. Trapezoidal lots are encouraged in cluster development because they better enable the land planner to adjust to curvilinear roads or cul-de-sacs by increasing the total open space area of the site. Figure 3.2.8B, Preservation of Open Space, compares the use of trapezoidal lots to the use of conservation servitudes on private lots.
    Figure 3.2.8B
    Preservation of Open Space
    Illustrative Preservation of Open Space
    Illustrative Common Open Space
      1. Curvilinear Streets. Irregular lots are permitted where the street alignment would otherwise force larger, pie shaped lots and the use of irregular lots would allow for smaller lots and more access to open space. See Figure 3.2.8C, Curvilinear Streets.
    Figure 3.2.8C
    Curvilinear Streets
    Illustrative Curvilinear Streets
      1. Large Lots. Where lots exceeding three acres are provided, the lot shape that provides efficient use of the land and minimum lot size may be used. See Figure 3.2.8D, Large Lots.
    Figure 3.2.8D
    Large Lots
    Illustrative Large Lot Subdivision
    1. Access to Lots. Access to single-family and duplex lots shall be in accordance with Section 3.6.11, Access Management and Circulation.
    2. Railroads and Limited Access Highways. Railroad rights-of-way and limited access highways where so located as to affect the subdivision of adjoining lands shall be treated as follows:
      1. In residential areas a Type D bufferyard shall be required in addition to the normal depth of the lot required shall be provided adjacent to the railroad right-of-way or limited access highway. This strip shall be part of the platted lots and shall be designated on the plat as follows: "This strip is reserved for screening. The placement of any structure hereon is prohibited."
      2. In business, commercial or industrial areas the nearest street extending parallel or approximately parallel to the railroad shall, wherever practicable, be at a sufficient distance therefrom to ensure suitable depth for commercial or industrial sites.
      3. Streets parallel to the railroad when intersecting a street which crosses the railroad at grade shall, to the extent practicable, be at a distance of at least 50 feet from the railroad right-of-way. Such distance shall be determined with due consideration of the minimum distance required for future separation of grades by means of appropriate approach gradients.
    3. Water Covered/Sensitive Areas.
      1. If a tract being subdivided contains a privately owned water body, or portion thereof, lot lines shall be so drawn as to distribute the entire ownership of the water body among the adjacent lots. The director may approve an alternative plan whereby the ownership of and responsibility for safe maintenance of the water body is so placed that it will not become a local government responsibility. No more than 25 per cent of the minimum area of a lot may be satisfied by land which is under water. Where a watercourse separates the buildable area of a lot from the street to which it has access, provisions shall be made for installation of a culvert or other drainage structure in accordance with the requirements of the Parish Department of Public Works.
      2. Low-lying lands along existing watercourses subject to periodic flooding or overflowing during storm periods, whether or not included in areas for dedication shall be preserved and retained in their natural state as drainage ways. Such land or lands subject to periodic flooding shall not be used for computing the area requirements of any lot. Lots shall not, in general, derive access exclusively from a primary or secondary arterial. Where driveway access from a primary or secondary arterial may be necessary for several adjoining lots, the director may require that such lots be served by a combined street. Where possible, driveways should be designed and arranged so as to avoid requiring vehicles to back into traffic on major or secondary arterials.

    Effective on: 11/1/2013

    Sec. 3.2.9 Flag Lots

  • Generally. The intent of a flag lot or flag lots is to promote infill residential development but not to disrupt the existing character of a neighborhood. It is also to provide dedicated public or private street access for those infill lots while avoiding the need for joint access servitudes that lead to neighbor disputes. Flag lots shall not be approved in areas where there is not existing residential development so as to prevent the circumvention of the subdivision process.
  • Purpose. The purpose of these provisions are to consolidate and reduce access points and points of conflict to improve traffic safety along parish highways and streets.
  • Design Standards.
    1. Generally.
      1. The main body portion of the flag lot, excluding the "pole" portion of the lot, shall meet the minimum requirements for lots required by the applicable zoning district. The "pole" portion of the lot shall maintain the minimum width from the street frontage to the main body of the flag lot.
      2. The distance between flag lot driveways shall be in accordance with Table 3.6.11A, Minimum Arterial and Collector Lot Frontage.
    2. Flag Lots Serving Two or Fewer Lots or Dwelling Units. Flag lots serving two or fewer lots or dwelling units shall comply with the following:
      1. The flag lots shall be created using the subdivision process or other recorded legal instrument approved by the Parish Attorney to create a servitude of passage to the lots or dwelling units. See Figure 3.2.9A, Illustrative Flag Lots with Servitude of Passage.
      2. The servitude of passage (i.e., the "pole" portion of the flag lot) shall be a minimum of 50 feet wide.
    • Figure 3.2.9A
    Illustrative Flag Lots with Servitude of Passage
      1. Flag Lots Serving More than Two Lots or Dwelling Units. Flag lots serving more than two lots or dwelling units shall comply with the following:
        1. Creation of the flag lots requires the construction and dedication of a new public or private street meeting all the requirements as set out in Division 3.6, Streets, Sidewalks, and Access. See Figure 3.2.9B, Illustrative Flag Lots with New Street.
        2. The flag lots and dedicated right-of-way shall be created using the subdivision process.
    Figure 3.2.9B
    Illustrative Flag Lots with New Street
      1. Flag Lots Within New Subdivisions. Flag lots within newly proposed subdivisions shall comply with the following:
        1. They shall only be allowed on cul-de-sacs or where an irregular-shaped parcel or parcels, or restrictions caused by natural resources (e.g., floodplain or watercourses), warrant their use. See Figure 3.2.9C, Illustrative Flag Lots in New Subdivisions.
        2. The flag lots shall be created using the subdivision process.
        3. The servitude of passage (i.e., the "pole" portion of the flag lot) shall be a minimum of 20 feet wide on cul-de-sacs and 50 feet for access to any other parcel.
    Figure 3.2.9C
    Illustrative Flag Lots in New Subdivisions

    Effective on: 11/1/2013

    Sec. 3.2.10 Servitudes

  • Generally. During development approval, the Parish may require the granting of a variety of servitudes on private property or lots. These servitudes may be for any of the following, or other approved, purposes:
    1. Drainage;
    2. Utilities;
    3. Access to public utilities or drainage areas;
    4. Fire protection;
    5. Police protection and other emergency services;
    6. Solid waste removal;
    7. Pedestrian access; and
    8. Natural resource or open space conservation.
  • Utility Servitudes. Where required, all lots shall provide utility servitudes for sewer, water, gas, drainage, electricity, cable, fiber-to-the-home, or other public utilities that are necessary or desirable to serve the subdivision. At a minimum, servitudes shall be designed and dedicated as follows:
    1. All private or public utilities shall be located within servitudes adjacent to streets or along lot lines.
    2. Servitudes located along rear lot lines may be provided for the local distribution of utilities (private and public). Such servitudes shall be minimum of 10 feet on one side of the rear lot lines.
    3. Where servitudes for high voltage distribution or transmission facilities are located along the rear lot lines they shall be of sufficient width to accommodate maintenance and operation.
    4. Where topographic or other conditions are such as to make impractical access to a rear lot line utility, servitude at least 20 feet in width shall be provided along the side lot lines of at least two lots per block for satisfactory access.
  • Drainage Servitudes. To the extent possible, existing surface drainage patterns serving any off-site properties or two or more proposed lots or properties shall be protected by servitudes or open space. In addition, drainage servitudes shall be placed on lots to convey surface water to storm sewers located on the street or to surface drainage channels located in servitudes or open spaces as topography and grading dictate. At a minimum, servitudes shall be designed and dedicated as follows:
    1. Flood control or storm drainage servitudes containing underground facilities shall have a minimum width of 10 feet.
    2. Where a subdivision is traversed by an existing or proposed ditch, canal, watercourse, drainageway, or channel, there shall be provided a stormwater drainage servitude conforming substantially to the lines of such watercourse, plus a minimum of 20 feet on one side for maintenance purposes. If a variance is granted relative to the length of the block for lots abutting said servitude, an additional 50 feet of servitude shall be provided for access from the street at approximately 2,500 feet intervals. If the block is 4,000 feet or less in length, the additional 50 feet of servitude shall be provided in the approximate center of the block.
    3. Where topographic or other conditions are such as to make impractical the inclusion of drainage facilities within the streets, an additional perpetual unobstructed drainage servitude of adequate width shall be provided adjacent to the street lines.
    4. When a proposed drainage system is intended to carry water across private land outside the subdivision, appropriate drainage servitudes must be secured and indicated on the plat. Such servitudes must extend to the nearest acceptable publicly maintained watercourse or other approved discharge location.
    5. The subdivider or developer shall dedicate a drainage servitude on both sides of all existing watercourses, to a width to be determined by the Director.
  • Fire Protection Servitudes. Rear fire protection access servitudes, where necessary to provide adequate protection for the structure, shall be improved as appropriate for fire protection equipment, at a width of 20 feet, with appropriate turning radii for the Parish's fire protection equipment as determined by the Fire Department.
  • Pedestrian Access Servitudes. Pedestrian access servitudes may be required in accordance with Division 3.6, Streets, Sidewalks, and Access.
  • Conservation Servitudes.
    1. The Parish shall require conservation servitudes to preserve open space as required by this UDC, and to protect natural resources that this UDC requires to be protected.
    2. Conservation servitudes shall exclude other servitudes that would result in the disturbance of the land, except that pedestrian access servitudes and non-destructive utility and drainage servitudes are permitted within areas protected by conservation servitudes.
    3. Conservation servitudes shall provide for permanent management and maintenance of the property by a responsible party other than the Parish, such as a nonprofit land trust or property owners' association.
    4. All conservation servitudes shall run in favor of two parties:
      1. All lots or unit owners in the development; and
      2. The Parish.
    5. The conservation servitudes shall be in a form approved by the Parish Attorney.
  • Encroachments and Removal of Encroachments. No permanent encroachment or structures shall be allowed to be located within the area of any servitude required by this Section. While the Parish or utility benefiting from the servitude will make efforts to minimize disturbances, both shall have the right to remove any encroachment, structures, fences, landscaping or other improvements placed upon such servitude. The Parish and/or utility shall not be obligated to restore or replace any such encroachment but shall restore any disturbed ground surfaces with seeding. The Parish may assess the cost of removing an unauthorized improvement from a servitude against the landowner, including the placing of a lien on the property.
  • Maintenance of Servitudes. The responsibility for the regular maintenance of the ground surface in any servitude shall rest with the owner of the property within which the servitude exists.
  • Optional or Delayed Dedication. Should the developer choose not to dedicate public servitudes for utilities, drainage structures, or streets within a development, the developer, or his successor or assigns, shall be responsible for the maintenance and operation of those utilities, drainage structures or streets. The utilities, roads and/or improvements when intended for dedication to the Parish, must meet or exceed the UDC standards in effect at the time of dedication and other applicable regulations of the Parish or ordinances thereof, to which such utilities, roads and/or improvements may be applicable.

    • Effective on: 2/4/2014

    Sec. 3.2.11 Public Sites, Open Space, and Natural Features

  • Generally. Resource protection areas, recreation areas, stormwater management facilities, and other open spaces should be designed, where feasible, according to the standards of this Section.
  • Design.
    1. Generally, recreation areas, resource protection areas, and other accessible open spaces shall be integrated into the development design to bring significant open space to the maximum number of properties, as well as visibility from public rights-of-way within the proposed development. Visual or physical access to open spaces may be limited if such limitations would materially enhance natural resource management.
    2. Open space shall be designed to provide greenways along drainage corridors and streams. Landscaping along corridors or streams shall be designed to enhance stormwater quality, ecosystems and habitats.
  • Parks, Playgrounds, Schools and Other Public Uses. Where a proposed site of a park, playground, school or other public use is shown on the conceptual plan and is located in whole or in part in a subdivision, and the Director concurs with the need for the said facility, he may require the reservation of the site within the subdivision for the stated purpose. He shall then recommend to the Parish Council that they pay just and adequate compensation as may be required by law. If a subdivider fails to provide a site for a needed public use, the Director may require the inclusion of such a site with the conceptual master plan, and recommend to the Parish Council payment of just and adequate compensation as may be required by law. For estimating standards for open spaces, allow one acre per 800 persons of population.

    • Effective on: 11/1/2013

    Sec. 3.2.12 Subdivision Monumentation

  • Generally. Monuments shall be placed to mark the following:
    1. Lot corners, points of curvature, points of tangency, and reference points; and
    2. Street centerlines, points of curvature, points of tangency, and reference points.
  • Horizontal Monuments. All permanent horizontal monuments in the subdivision shall be established and consist of the following requirements.
    1. The external boundaries of a subdivision shall be monumented in the field by monuments of concrete, not less than thirty 30 inches in length, not less than four inches square or five inches in diameter, and marked on top with a cross, brass plug, iron rod, or other durable material securely embedded; or by iron rods or pipes at least 30 inches long and one inch in diameter. These monuments shall be placed no more than 1,400 feet apart in any straight line and at all corners, at each end of all curves, at the point where a curve changes its radius, at all angle points along any line, and at all angle points along any meander line, said points to be not less than 20 feet back from the bank of any bayou or canal, except that when such corners or points fall within a street, or proposed future street, the monuments shall be placed in the side line of the street.
    2. All boundaries shall be monuments set in the field using iron rods or pipes at least 30 inches long and three quarters of an inch in diameter. These monuments shall be placed at all block and lot corners, at each end of all curves, and at all angle points in any line, and/or as determined by the Director.
    3. Monumentation shall be required for all developments in accordance with the requirements of paragraph B.1. above.
    4. The lines of lots that extend to bayous or canals shall be monumented by iron pipes at least 30 inches long and three-quarters of an inch in diameter; or be three-quarters of an inch round or square iron bars at least 30 inches long. These monuments shall be placed at the point of intersection of the river or stream lot line with a meander line established not less than 20 feet back from the bank of the river or stream.
    5. All such monuments shall be set flush with the ground and installed in such a manner that they will not be removed by normal erosion.
    6. All monuments shall be properly established in the ground and approved by a registered land surveyor prior to the time the Director recommends approval of the final plat.

    • Effective on: 3/12/2014

    Sec. 3.3.1 TND Design and Layout

  • Generally. An efficient multimodal circulation system that includes streets, alleys, sidewalks, and trails shall be provided throughout the proposed development. Generally, the density and intensity of development shall be concentrated in the center subdistricts, and lessen as distance to the center subdistricts increases.
  • Subdistricts. The applicant shall designate the boundaries of the subdistricts on the plan for the TND.
  • Access to Residential Lots. Residential lots shall be accessed as provided in Table 3.3.1A, Residential Access by Subdistrict.
    • Table 3.3.1A
    Residential Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Driveway Connects to Street Not Allowed Allowed only for single-family detached homes on lots that are wider than 60 feet Allowed
    Driveway Connects to Alley Allowed Allowed Allowed
    Table 3.3.1A
    Residential Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Driveway Connects to Street Not Allowed Allowed only for single-family detached homes on lots that are wider than 60 feet Allowed
    Driveway Connects to Alley Allowed Allowed Allowed
    Table 3.3.1A
    Residential Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Driveway Connects to Street Not Allowed Allowed only for single-family detached homes on lots that are wider than 60 feet Allowed
    Driveway Connects to Alley Allowed Allowed Allowed
    Table 3.3.1A
    Residential Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Driveway Connects to Street Not Allowed Allowed only for single-family detached homes on lots that are wider than 60 feet Allowed
    Driveway Connects to Alley Allowed Allowed Allowed
    1. Access to Nonresidential and Mixed-Use Development. Nonresidential and vertically mixed-use development shall be accessed as provided in Table 3.3.1B, Nonresidential and Mixed-Use Access by Subdistrict.
    Table 3.3.1B
    Nonresidential and Mixed-Use Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Parking Lot Access Connects to Street Allowed only along streets that define the border of the Center subdistrict Not Allowed Allowed
    Parking Lot Access Connects to Alley Allowed Allowed Not Allowed
    On-Street Parking Allowed Allowed Allowed
    Mid-Block Access to Parking Structures or Parking Courts Located Behind Buildings Allowed Allowed Allowed
    Table 3.3.1B
    Nonresidential and Mixed-Use Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Parking Lot Access Connects to Street Allowed only along streets that define the border of the Center subdistrict Not Allowed Allowed
    Parking Lot Access Connects to Alley Allowed Allowed Not Allowed
    On-Street Parking Allowed Allowed Allowed
    Mid-Block Access to Parking Structures or Parking Courts Located Behind Buildings Allowed Allowed Allowed
    Table 3.3.1B
    Nonresidential and Mixed-Use Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Parking Lot Access Connects to Street Allowed only along streets that define the border of the Center subdistrict Not Allowed Allowed
    Parking Lot Access Connects to Alley Allowed Allowed Not Allowed
    On-Street Parking Allowed Allowed Allowed
    Mid-Block Access to Parking Structures or Parking Courts Located Behind Buildings Allowed Allowed Allowed
    Table 3.3.1B
    Nonresidential and Mixed-Use Access by Subdistrict
    Access Subdistrict
    Center General Edge
    Parking Lot Access Connects to Street Allowed only along streets that define the border of the Center subdistrict Not Allowed Allowed
    Parking Lot Access Connects to Alley Allowed Allowed Not Allowed
    On-Street Parking Allowed Allowed Allowed
    Mid-Block Access to Parking Structures or Parking Courts Located Behind Buildings Allowed Allowed Allowed
    1. Blocks. The standards of this subsection supersede standards in Division 3.6, Streets, Sidewalks, and Access in the event of a direct conflict.
      1. Arrangement. Although a strict grid is not required, blocks shall be arranged in grid-like fashion to ensure connectivity and alternate travel routes within the development.
      2. Block Length.
        1. Street segments in the Center Subdistrict shall not be longer than 500 feet, unless buildings provide pedestrian access from the front sidewalk to rear parking areas or structures at intervals of not more than 300 feet.
        2. Street segments in the General and Edge Subdistricts, shall not be longer than 650 feet, and should generally be shorter than 650 feet. This requirement does not apply where:
          1. The street segment traverses open spaces that are wider than 650 feet; or
          2. The view along the segment is interrupted by a significant curve, jog, or offset in the street, provided that the curve, jog, or offset is situated not more than 650 feet from the intersections that define the street segment.
      3. Cul-de-sacs. Cul-de-sacs may be used only in the “E” sub-district, but only where necessary due to site constraints. Cul-de-sacs may not be longer than 350 feet.
    2. Streets. Streets shall be designed according to the applicable standards of Division 3.6, Streets, Sidewalks, and Access, and as provided therein, may have different right-of-way width and utilization than other streets in the Parish. Streets shall be laid out to provide connectivity within the development, and connections to adjacent neighborhoods.
    3. Alleys. Alleys shall be installed to provide service and parking access within the Center and General subdistricts, and shall conform to the requirements of Division 3.6, Streets, Sidewalks, and Access. In areas where alleys will be used to provide services (e.g., trash collection or utilities) in addition to access, the Parish may require greater dimensions, and the Director of Public Works or designee shall approve all connections and curb radii after consultation with the Fire Department and solid waste service provider.
    4. Sidewalks. Sidewalks shall be installed on both sides of all streets, except along a side which is a park or designated open space, and shall be designed with the dimensions set out in Table 3.6.2B, TND Street Configurations, and the Americans with Disabilities Act Accessibility Guidelines.
    5. Trails. Off-street trails and multi-use paths shall be installed to enhance access to and through open space and recreational areas that are used as amenities for the TND development, and to connect to existing or planned trail systems in the Parish. Trails, where used, shall be eight feet wide and paved with concrete, compacted crushed limestone, or compacted cinder.
    6. Off-Street Parking. Off-street parking shall be located behind the building it serves, or in parking garages that are designed according to the same standards which are set out in Division 3.5, Parking and Loading.
    7. Open Space and Recreation Areas.
      1. Open Space.
        1. Generally, open spaces should be integrated into the development design to bring significant open space to the maximum number of properties, as well as visibility from public rights-of-way within the proposed development. Small, odd, left-over open space areas should be avoided. Extra landscaping may be required to enhance the value of such spaces where they cannot be avoided.
        2. Open space shall be designed to provide greenways along drainage corridors and streams. The landscaping along corridors or streams shall be designed to enhance the filtering of surface and subsurface water flows. Trails shall provide access along the greenway for the residents of the proposed development.
        3. Formal open spaces shall be designed to provide areas of focus within the development. Landscaping and furniture for pedestrians should be installed to enhance this effect.
        4. Open spaces shall be protected by appropriate servitudes and plat notations.
      2. Accessibility of Recreation Areas. Outdoor recreation areas shall be provided throughout the development, such that 90 percent of the residential units in the development (and 100 percent of the units in the "C" sub-district) are located within a one-quarter mile walk of an outdoor recreation area. For the purpose of this subsection, a plaza with features that provide recreational opportunities (e.g., interactive fountain or sculpture, tot lot, etc.) shall be considered an outdoor recreation area.
    8. Relation to Abutting Parcels. Development that is approved pursuant to this Division shall be designed to be compatible with abutting parcels, in at least one of the following ways:
      1. Lot Width and Design. The lot width and design of development at the perimeter of a TND shall be comparable with the lot width and design of abutting subdivisions. This requirement does not apply if the abutting parcel is not subdivided.
      2. Bufferyard. In the alternative to subsection A., bufferyards may be installed according to the classifications set out in Section 3.11.1, Bufferyard Requirements, as follows:
        1. Between the center subdistrict and abutting:
          1. Residential development: Class D bufferyard; or
          2. Industrial development: Class E bufferyard;
        2. Between the general subdistrict and abutting:
          1. Residential or commercial development: Class B bufferyard; or
          2. Industrial development: Class E bufferyard;
        3. Between the edge subdistrict and abutting:
          1. Residential development: Class A bufferyard;
          2. Commercial development: Class C bufferyard; or
          3. Industrial development: Class E bufferyard.
    9. Mews Arrangement.
      1. Generally. The mews arrangement is a site layout in which homes front on a common green, and vehicular access is by way of alleys so that lots have no street frontage. The mews arrangement is allowed in TNDs subject to the standards of this Section.
      2. Standards. Lots may take alley access and front on mews (common greens) if the alleys are not longer than 300 feet and do not serve more than 16 dwelling units. See Figure 3.3.1, Mews Arrangement.
      Figure 3.3.1
      Mews Arrangement
      Mews Arrangement in TND Developments

    Effective on: 11/1/2013

    Sec. 3.3.2 TND Mix of Housing Types

  • Generally.
    1. The following types of development shall include a mix of housing types pursuant to this Section.
      1. TNDs.
    2. Individual housing types that may be included in the mix include single-family detached dwellings, patio homes, zero lot line homes, two-family dwellings, triplexes, townhomes, and multiple-family dwellings.
  • Housing Type Mix Requirements. Table 3.3.2, Housing Type Mix Requirements, sets out the mix of housing types that are required for TNDs. When calculating the percentage of each housing type in a proposed development, normal rounding is allowed.
    • Table 3.3.2
    Housing Type Mix Requirements
    Number of Dwelling Units in
    Mixed Housing Neighborhood or TND    		 Min. No.
    of Housing Types    		 Max. % Any
    Housing Type    		 Min. % Any
    Housing Type1
    Less than 40 1 100 20
    40 - 89 2 75 25
    90-149 3 55 20
    150- 220 4 50 12
    More than 220 5 30 10
    TABLE NOTE:
    1 This requirement applies even if more than the minimum number of housing types are provided.
    Table 3.3.2
    Housing Type Mix Requirements
    Number of Dwelling Units in
    Mixed Housing Neighborhood or TND    		 Min. No.
    of Housing Types    		 Max. % Any
    Housing Type    		 Min. % Any
    Housing Type1
    Less than 40 1 100 20
    40 - 89 2 75 25
    90-149 3 55 20
    150- 220 4 50 12
    More than 220 5 30 10
    TABLE NOTE:
    1 This requirement applies even if more than the minimum number of housing types are provided.
    Table 3.3.2
    Housing Type Mix Requirements
    Number of Dwelling Units in
    Mixed Housing Neighborhood or TND    		 Min. No.
    of Housing Types    		 Max. % Any
    Housing Type    		 Min. % Any
    Housing Type1
    Less than 40 1 100 20
    40 - 89 2 75 25
    90-149 3 55 20
    150- 220 4 50 12
    More than 220 5 30 10
    TABLE NOTE:
    1 This requirement applies even if more than the minimum number of housing types are provided.
    Table 3.3.2
    Housing Type Mix Requirements
    Number of Dwelling Units in
    Mixed Housing Neighborhood or TND    		 Min. No.
    of Housing Types    		 Max. % Any
    Housing Type    		 Min. % Any
    Housing Type1
    Less than 40 1 100 20
    40 - 89 2 75 25
    90-149 3 55 20
    150- 220 4 50 12
    More than 220 5 30 10
    TABLE NOTE:
    1 This requirement applies even if more than the minimum number of housing types are provided.
    1. Phasing. When a development is to be phased, the maximum residential development capacity of the entire site shall be used for calculating the required mix. When a parcel is to be subdivided and developed as a TND over time, the Parish may impose a mix based on the original property size to ensure an adequate mix of housing types.

    Effective on: 2/4/2014

    Sec. 3.4.1 General Requirements for New Manufactured Home Parks and Subdivisions

  • Generally. All manufactured home parks and subdivisions shall be built in accordance with the minimum standards of this Division.
    1. Required Maintenance. It shall be the responsibility of the manufactured home park or subdivision owner/operator to establish maintenance procedures to maintain the manufactured home park or subdivision free from obnoxious weeds, rubbish, trash and garbage and to further maintain and keep the property in a sanitary condition.
    2. Infrastructure Improvements. All improvements, such as electric lines, electrical connections, sewer lines, sewer hookups, water lines and water taps shall be installed by a qualified electrician and/or plumber and conform to all Parish specifications. Inspection and approval of all above improvements shall be the responsibility of the Director. Installation and maintenance of all applicable infrastructure improvements shall be in conformance with the most recent adopted version of the Louisiana State Uniform Construction Code Council (LSUCCC).
    3. Adequately Drained Site. In conformance with Division 3.9, Drainage, the manufactured home park or subdivision shall be located on a well-drained site, properly graded to ensure rapid drainage and freedom from stagnant pools of water.
    4. Spacing. Manufactured homes shall be so situated on each space that there shall be at least:
      1. A minimum of 3,500 square feet for each space which shall be at least 37 feet wide and clearly defined.
      2. Fifteen-foot clearance between the sides of manufactured homes.
      3. The end-to-end clearance shall not be less than 10 feet.
      4. Ten feet from any building, recreation park, interior street, guest parking areas or any property boundary line of the park. At any intersection of a manufactured home park or subdivision drive and public streets bounding the property, no manufactured home unit or structure of any kind shall be located within a triangle formed by a diagonal that connects a point located 45 feet along the center line of the driveway from its point of intersection with the street servitude, and a point located 40 feet from the point of intersection measured along the street servitude.
    5. Accessory Structures. Individual manufactured home spaces may have accessory structures of metal, fiberglass or other noncombustible material, which shall not be located closer than three feet to any manufactured home lot line.
    6. Maximum Coverage. Manufactured homes together with accessory structures shall not cover more than 75 percent of a manufactured home space.
    7. Parking, Driveways, and Walkways.
      1. The design criteria for automobile parking shall be based upon two parking spaces for each manufactured home space. Parking may be in tandem.
      2. All manufactured home spaces shall abut upon a driveway of not less than 20 feet in width, which shall have unobstructed access to a public street, or highway and shall be constructed of concrete, asphalt, limestone, shell or gravel surface.
      3. Walkways not less than two feet wide shall be provided to the service buildings. All walkways may be constructed of concrete asphalt, limestone, shell or gravel.
      4. All driveways and walkways within the manufactured home park or subdivision shall be well lighted at night with electric lamps to ensure adequate protection and safety of the occupants.
    8. Service Buildings. Laundry, office, and maintenance buildings are permitted as an accessory use. When a manufactured home park or subdivision provides service buildings, of 2,500 square feet or less for maintenance, toilet, lavatory or laundry facilities, they shall [each] be equipped with one first-aid kit and one fire extinguisher. An additional first-aid kit and extinguisher shall be furnished for each additional 2,500 square feet.
    9. Recreation Areas. Where manufactured home parks or subdivisions are established, recreational areas shall be provided which shall be a minimum of 10 percent of the overall parcel proposed for development, exclusive of streets and parking areas.
    10. Screening. All manufactured home parks and subdivisions shall be screened from view using one of the following:
      1. A bufferyard shall be installed along the perimeter boundary of the manufactured home park or subdivision in conformance with Section 3.11.1, Bufferyard Requirements. Such greenbelt/buffer shall provide natural screening and shall be continuously maintained and shall be devoted exclusively for common open space and landscaping; or
      2. A solid fence of wood, masonry, plastic, fiberglass, or metal construction, at least six feet in height and not more than 10 feet in height and of a uniform size, shall be constructed along the boundaries of a manufactured home park. All fencing material shall be constructed of wood, brick, stone, split-face concrete block, PVC plastic, fiberglass, decorative metal, or similar material that is commonly used, marketed and sold for such purposes. In no instance shall plain material including but not limited to concrete block, fiberglass, wood, or metal sheeting be allowed.
    11. Storage Capacity. Each manufactured home unit or lot is hereby required to have a garage or some enclosed, lockable area for outdoor storage of lawn equipment, bicycles, and other storage items. Such garage or enclosed storage area shall be permanently affixed to the land. The minimum floor space for a storage area which is not designed to enclose or house an automobile shall be 80 square feet.
  • Manufactured Home Unit Requirements. Individual manufactured home units in a manufactured home park or subdivision shall meet the following specifications.
    1. Setback and Spacing Requirements. Setback and spacing requirements shall be in conformance with Section 1.6.1, Agricultural and Residential Lot, Yard, and Height Standards.
    2. Design and Construction Requirements. Design and construction requirements shall be in conformance with Section 2.2.1, Modular and Manufactured Home Design and Construction Requirements.

    • Effective on: 11/1/2013

    Sec. 3.4.2 Manufactured Home Park Operating Requirements

  • Generally. It is the general purpose of this Section to promote the public health, safety, and general welfare by providing standards and procedures for the operation of manufactured home parks.
  • Occupational Permit Required.
    1. Permit. After the effective date of this UDC, it shall be unlawful for any person to maintain or operate a manufactured home park within the unincorporated areas of the Parish, unless such person shall first obtain an occupational permit.
    2. Application. Occupational permits to own and operate manufactured home parks in the unincorporated areas of the Parish shall be issued to persons applying for such occupational permit with the Parish Sales and Tax Use Department, or as otherwise specified.
    3. Annual Renewal. Occupational permits shall be issued on an annual basis, shall expire on December 31 of each year, and must be renewed in accordance with Section 11-31(b), Due and Payment Dates, of the St. Mary Parish Code of Ordinances.
    4. Posting. Manufactured home park occupational permits shall be conspicuously posted in the main office of each manufactured home park. Should the manufactured home park not have a main office, the license shall be conspicuously posted in a protected area near the entrance of the manufactured home park.
  • Operating Requirements.
    1. Responsibility of Owner/Operator.
      1. The owner or operator of a manufactured home park shall be responsible for operating and maintaining the manufactured home park in accordance with all applicable laws and regulations of the United States of America, the state, and the Parish. This includes, at minimum, maintaining the manufactured home park free from obnoxious weeds, rubbish, trash and garbage and to further maintain and keep the property in a sanitary condition.
      2. The owner or operator shall, at all times, maintain a current record of all manufactured home owners and/or occupants of the manufactured home park. The records shall contain the following information:
        1. Make, model, and year of each manufactured home and the lot number which it occupies;
        2. Name of owner or occupant of each manufactured home within the manufactured home park.
      3. The owner or operator of each manufactured home park shall post, at the main entrance to the manufactured home park, a chart or map designating and depicting the location of each lot within the manufactured home park, by lot number.
    2. Manufactured home lots shall be individually numbered and individual signs designating the number of each lot shall be conspicuously posted throughout the manufactured home park.
    3. No open fires shall be permitted in manufactured home parks. Portable barbecue pits are permitted on individual manufactured home lots but shall not be left unattended. Regulations of the National Fire Protection Association shall prevail except when in conflict with more restrictive Parish ordinances.
  • Signs to be Posted.
    1. All owners, managers, whether corporation, partnership or individual owners, of manufactured home parks shall erect a sign designating the name and address of the manufactured home park.
    2. The sign shall be placed on the public right-of-way adjacent to the manufactured home park in such a manner as to make it visible to passing motorists.
    3. The sign shall be of a size not less than three feet in width by two feet in height and shall be lettered in clear recognizable letters of not less than four inches in height.
  • Enforcement of Section. The Director shall have the right to enforce the provisions of this Section by applying to any court of competent jurisdiction or the enforcement hereof. In any such proceeding, the Director may petition such court for the revocation of the occupational permit and/or for specific performance to compel compliance with the provisions of such permit.

    • Effective on: 2/4/2014

    Sec. 3.5.1 Calculation of Required Parking Spaces

  • Generally. The standards of this Section are used to calculate how many parking spaces are required to serve a proposed development.
  • Calculations. The number of parking spaces that are required for a development relates to one or more independent variables, such as floor area, seating capacity, projected full time equivalent employees, number and type of dwelling units, and so forth.
    1. Measurements. The independent variables shall be measured as follows:
      1. Floor Area: Where the number of parking spaces in Section 3.5.2, Required Parking and Loading, is calculated based on the floor area of the use, or floor area put to a specified aspect of the use, the measurement of floor area shall not include restrooms, utility rooms (electrical and phone rooms, trash rooms, and custodial closets), elevator cores, and areas of commercial and institutional uses that are designed and used exclusively for incidental storage.
      2. Seats: One seat is equal to:
        1. One fixed seat;
        2. 30 inches of bench seating; or
        3. 20 square feet of floor area used for temporary seating.
      3. Capacity:
        1. For indoor uses, capacity shall be measured pursuant to the requirements of the applicable fire code.
        2. For outdoor uses, capacity shall be measured by the estimated number of persons present during periods of peak use.
        3. Number of beds shall be measured by the design capacity of an institutional residential, protective care, or residential eldercare use.
  • Multiple Nonresidential Uses. If several nonresidential uses occupy a single parcel or building, the off-street parking and loading requirements shall be the cumulative total for all uses, unless:
    1. The uses are in a center with multiple retail, service, or restaurant tenants, which shall be classified cumulatively as "shopping center" for the purposes of parking requirements. See Section 3.5.2, Required Parking and Loading, subsection E.

    • Effective on: 11/1/2013

    Sec. 3.5.2 Required Parking and Loading

  • Generally. The number of parking and loading spaces that are required for each land use are set out in the Tables in this Section. The tables include two sets of two columns. The first provide standards for development throughout the Parish ("Standard Development"). The second provide standards for parking within Traditional Neighborhood Developments (TNDs). Opportunities for reduction of parking requirements are set out in other sections of this Division.
  • Exemption from Loading Space Requirements. Buildings that are less than 5,000 square feet in area are exempt from loading space requirements.
  • Residential Uses. The parking requirements for residential uses are set out in Table 3.5.2A, Required Parking and Loading for Residential Uses.
    • Table 3.5.2A
    Required Parking and Loading for Residential Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Single-Family Detached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Single-Family Attached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Multiplex and Multiple-family Dwellings 1.5 spaces per studio or 1 bedroom dwelling unit +2 spaces per 2+ bedroom dwelling unit + 1 guest space per 4 dwelling units 1 space per 20 dwelling units in a vertically mixed-use building; not required in other configurations 1.5 spaces per studio or 1 bedroom unit + 2 spaces per 2+ bedroom unit Same as Standard Development
    Manufactured Home (outside manufactured home park or subdivision) 2 spaces per dwelling unit NA
    Manufactured Home (inside manufactured home park or subdivision) 2 spaces per dwelling unit + 1 guest space per 4 dwelling units NA
    Community Homes As required for housing type NA Same as Standard Development Same as Standard Development
    Live-Work Units 3 spaces per dwelling unit NA Same as Standard Development Same as Standard Development
    Table 3.5.2A
    Required Parking and Loading for Residential Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Single-Family Detached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Single-Family Attached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Multiplex and Multiple-family Dwellings 1.5 spaces per studio or 1 bedroom dwelling unit +2 spaces per 2+ bedroom dwelling unit + 1 guest space per 4 dwelling units 1 space per 20 dwelling units in a vertically mixed-use building; not required in other configurations 1.5 spaces per studio or 1 bedroom unit + 2 spaces per 2+ bedroom unit Same as Standard Development
    Manufactured Home (outside manufactured home park or subdivision) 2 spaces per dwelling unit NA
    Manufactured Home (inside manufactured home park or subdivision) 2 spaces per dwelling unit + 1 guest space per 4 dwelling units NA
    Community Homes As required for housing type NA Same as Standard Development Same as Standard Development
    Live-Work Units 3 spaces per dwelling unit NA Same as Standard Development Same as Standard Development
    Table 3.5.2A
    Required Parking and Loading for Residential Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Single-Family Detached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Single-Family Attached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Multiplex and Multiple-family Dwellings 1.5 spaces per studio or 1 bedroom dwelling unit +2 spaces per 2+ bedroom dwelling unit + 1 guest space per 4 dwelling units 1 space per 20 dwelling units in a vertically mixed-use building; not required in other configurations 1.5 spaces per studio or 1 bedroom unit + 2 spaces per 2+ bedroom unit Same as Standard Development
    Manufactured Home (outside manufactured home park or subdivision) 2 spaces per dwelling unit NA
    Manufactured Home (inside manufactured home park or subdivision) 2 spaces per dwelling unit + 1 guest space per 4 dwelling units NA
    Community Homes As required for housing type NA Same as Standard Development Same as Standard Development
    Live-Work Units 3 spaces per dwelling unit NA Same as Standard Development Same as Standard Development
    Table 3.5.2A
    Required Parking and Loading for Residential Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Single-Family Detached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Single-Family Attached Dwelling 2 spaces / dwelling unit NA Same as Standard Development NA
    Multiplex and Multiple-family Dwellings 1.5 spaces per studio or 1 bedroom dwelling unit +2 spaces per 2+ bedroom dwelling unit + 1 guest space per 4 dwelling units 1 space per 20 dwelling units in a vertically mixed-use building; not required in other configurations 1.5 spaces per studio or 1 bedroom unit + 2 spaces per 2+ bedroom unit Same as Standard Development
    Manufactured Home (outside manufactured home park or subdivision) 2 spaces per dwelling unit NA
    Manufactured Home (inside manufactured home park or subdivision) 2 spaces per dwelling unit + 1 guest space per 4 dwelling units NA
    Community Homes As required for housing type NA Same as Standard Development Same as Standard Development
    Live-Work Units 3 spaces per dwelling unit NA Same as Standard Development Same as Standard Development
    1. Institutional Uses. The parking requirements for institutional uses are set out in Table 3.5.2B, Required Parking and Loading for Institutional Uses.
    Table 3.5.2B
    Required Parking and Loading for Institutional Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Cemetery Greater of:
    Sum of 1 space per 100 sf. of indoor assembly space + 3 spaces per 1,000 sf. of office floor area; or20 spaces per acre of grave sites    		 1 space
    College / University / Vo Tech - Educational Facilities 1 space per 200 sf. of floor area (except auditoriums, theaters, gymnasiums, and stadiums) + 1/3 space per person times the capacity (persons) of auditoriums, theaters, gymnasiums, and stadiums 1 space per building with a floor area of 50,000 sf. or greater 1 space per 2 students 1 space per 40,000 sf.
    Hospitals or Sanitariums Special Study Special Study Same as Standard Development Same as Standard Development
    Institutional Residential 1 space per 3 beds 1 space per 30 beds Same as Standard Development Same as Standard Development
    Places of Public Assembly: Adult Day Care 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Places of Public Assembly: Day Care / Preschool 1 space per 100 sf. NA 1 space per 500 sf. NA
    Places of Public Assembly: Elementary School 3 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: Middle School 4 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: High School Special Study Special Study Same as Standard Development Same as Standard Development
    Places of Public Assembly: Library or Museum 1/3 space per person times building capacity (in persons) 1 space per 75,000 sf. of floor area 1 space per 400 sf. + 1 space per 32 sf. of floor area used for assembly (e.g., meeting rooms) 1 space per 75,000 sf. of floor area
    Places of Public Assembly: Other Greater of:1 space per 6 seats in auditorium; or
    1 space per 250 sf. of floor area    		 NA Same as Standard Development Same as Standard Development
    Private Club: No Food Service 1 space per 250 sf. of floor area used for assembly 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Private Club: With Food Service 1 space per 100 sf. of floor area used for assembly 1 space per 25,000 sf. Same as Standard Development 1 space
    Protective Care: Jail or Prison Corrective Institutions or Facilities (Public or Private) 1 per 5 cells 1 per 30 cells
    Protective Care: Other 1 space per 4 beds 1 space per 20 sleeping rooms
    Public Service: Fire Station 4 spaces per emergency vehicle bay NA Same as Standard Development Same as Standard Development
    Public Service: Police Station 1 space per 250 sf. 1 space per 60,000 sf. if the building is larger than 40,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Post Office 1 space per 200 sf. + 1 space per postal vehicle stored on-site 1 space per 10,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Other 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Assisted Living 1 space per dwelling unit + 1 space per 3 beds in shared living facilities 1 space Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Congregate Care 1 space per dwelling unit NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Nursing Home 1 space per 3 beds 1 space per 20 sleeping rooms Same as Standard Development Same as Standard Development
    Table 3.5.2B
    Required Parking and Loading for Institutional Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Cemetery Greater of:
    Sum of 1 space per 100 sf. of indoor assembly space + 3 spaces per 1,000 sf. of office floor area; or20 spaces per acre of grave sites    		 1 space
    College / University / Vo Tech - Educational Facilities 1 space per 200 sf. of floor area (except auditoriums, theaters, gymnasiums, and stadiums) + 1/3 space per person times the capacity (persons) of auditoriums, theaters, gymnasiums, and stadiums 1 space per building with a floor area of 50,000 sf. or greater 1 space per 2 students 1 space per 40,000 sf.
    Hospitals or Sanitariums Special Study Special Study Same as Standard Development Same as Standard Development
    Institutional Residential 1 space per 3 beds 1 space per 30 beds Same as Standard Development Same as Standard Development
    Places of Public Assembly: Adult Day Care 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Places of Public Assembly: Day Care / Preschool 1 space per 100 sf. NA 1 space per 500 sf. NA
    Places of Public Assembly: Elementary School 3 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: Middle School 4 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: High School Special Study Special Study Same as Standard Development Same as Standard Development
    Places of Public Assembly: Library or Museum 1/3 space per person times building capacity (in persons) 1 space per 75,000 sf. of floor area 1 space per 400 sf. + 1 space per 32 sf. of floor area used for assembly (e.g., meeting rooms) 1 space per 75,000 sf. of floor area
    Places of Public Assembly: Other Greater of:1 space per 6 seats in auditorium; or
    1 space per 250 sf. of floor area    		 NA Same as Standard Development Same as Standard Development
    Private Club: No Food Service 1 space per 250 sf. of floor area used for assembly 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Private Club: With Food Service 1 space per 100 sf. of floor area used for assembly 1 space per 25,000 sf. Same as Standard Development 1 space
    Protective Care: Jail or Prison Corrective Institutions or Facilities (Public or Private) 1 per 5 cells 1 per 30 cells
    Protective Care: Other 1 space per 4 beds 1 space per 20 sleeping rooms
    Public Service: Fire Station 4 spaces per emergency vehicle bay NA Same as Standard Development Same as Standard Development
    Public Service: Police Station 1 space per 250 sf. 1 space per 60,000 sf. if the building is larger than 40,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Post Office 1 space per 200 sf. + 1 space per postal vehicle stored on-site 1 space per 10,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Other 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Assisted Living 1 space per dwelling unit + 1 space per 3 beds in shared living facilities 1 space Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Congregate Care 1 space per dwelling unit NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Nursing Home 1 space per 3 beds 1 space per 20 sleeping rooms Same as Standard Development Same as Standard Development
    Table 3.5.2B
    Required Parking and Loading for Institutional Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Cemetery Greater of:
    Sum of 1 space per 100 sf. of indoor assembly space + 3 spaces per 1,000 sf. of office floor area; or20 spaces per acre of grave sites    		 1 space
    College / University / Vo Tech - Educational Facilities 1 space per 200 sf. of floor area (except auditoriums, theaters, gymnasiums, and stadiums) + 1/3 space per person times the capacity (persons) of auditoriums, theaters, gymnasiums, and stadiums 1 space per building with a floor area of 50,000 sf. or greater 1 space per 2 students 1 space per 40,000 sf.
    Hospitals or Sanitariums Special Study Special Study Same as Standard Development Same as Standard Development
    Institutional Residential 1 space per 3 beds 1 space per 30 beds Same as Standard Development Same as Standard Development
    Places of Public Assembly: Adult Day Care 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Places of Public Assembly: Day Care / Preschool 1 space per 100 sf. NA 1 space per 500 sf. NA
    Places of Public Assembly: Elementary School 3 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: Middle School 4 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: High School Special Study Special Study Same as Standard Development Same as Standard Development
    Places of Public Assembly: Library or Museum 1/3 space per person times building capacity (in persons) 1 space per 75,000 sf. of floor area 1 space per 400 sf. + 1 space per 32 sf. of floor area used for assembly (e.g., meeting rooms) 1 space per 75,000 sf. of floor area
    Places of Public Assembly: Other Greater of:1 space per 6 seats in auditorium; or
    1 space per 250 sf. of floor area    		 NA Same as Standard Development Same as Standard Development
    Private Club: No Food Service 1 space per 250 sf. of floor area used for assembly 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Private Club: With Food Service 1 space per 100 sf. of floor area used for assembly 1 space per 25,000 sf. Same as Standard Development 1 space
    Protective Care: Jail or Prison Corrective Institutions or Facilities (Public or Private) 1 per 5 cells 1 per 30 cells
    Protective Care: Other 1 space per 4 beds 1 space per 20 sleeping rooms
    Public Service: Fire Station 4 spaces per emergency vehicle bay NA Same as Standard Development Same as Standard Development
    Public Service: Police Station 1 space per 250 sf. 1 space per 60,000 sf. if the building is larger than 40,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Post Office 1 space per 200 sf. + 1 space per postal vehicle stored on-site 1 space per 10,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Other 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Assisted Living 1 space per dwelling unit + 1 space per 3 beds in shared living facilities 1 space Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Congregate Care 1 space per dwelling unit NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Nursing Home 1 space per 3 beds 1 space per 20 sleeping rooms Same as Standard Development Same as Standard Development
    Table 3.5.2B
    Required Parking and Loading for Institutional Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Cemetery Greater of:
    Sum of 1 space per 100 sf. of indoor assembly space + 3 spaces per 1,000 sf. of office floor area; or20 spaces per acre of grave sites    		 1 space
    College / University / Vo Tech - Educational Facilities 1 space per 200 sf. of floor area (except auditoriums, theaters, gymnasiums, and stadiums) + 1/3 space per person times the capacity (persons) of auditoriums, theaters, gymnasiums, and stadiums 1 space per building with a floor area of 50,000 sf. or greater 1 space per 2 students 1 space per 40,000 sf.
    Hospitals or Sanitariums Special Study Special Study Same as Standard Development Same as Standard Development
    Institutional Residential 1 space per 3 beds 1 space per 30 beds Same as Standard Development Same as Standard Development
    Places of Public Assembly: Adult Day Care 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Places of Public Assembly: Day Care / Preschool 1 space per 100 sf. NA 1 space per 500 sf. NA
    Places of Public Assembly: Elementary School 3 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: Middle School 4 spaces per classroom 1 space per 40,000 sf. Same as Standard Development Same as Standard Development
    Places of Public Assembly: High School Special Study Special Study Same as Standard Development Same as Standard Development
    Places of Public Assembly: Library or Museum 1/3 space per person times building capacity (in persons) 1 space per 75,000 sf. of floor area 1 space per 400 sf. + 1 space per 32 sf. of floor area used for assembly (e.g., meeting rooms) 1 space per 75,000 sf. of floor area
    Places of Public Assembly: Other Greater of:1 space per 6 seats in auditorium; or
    1 space per 250 sf. of floor area    		 NA Same as Standard Development Same as Standard Development
    Private Club: No Food Service 1 space per 250 sf. of floor area used for assembly 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Private Club: With Food Service 1 space per 100 sf. of floor area used for assembly 1 space per 25,000 sf. Same as Standard Development 1 space
    Protective Care: Jail or Prison Corrective Institutions or Facilities (Public or Private) 1 per 5 cells 1 per 30 cells
    Protective Care: Other 1 space per 4 beds 1 space per 20 sleeping rooms
    Public Service: Fire Station 4 spaces per emergency vehicle bay NA Same as Standard Development Same as Standard Development
    Public Service: Police Station 1 space per 250 sf. 1 space per 60,000 sf. if the building is larger than 40,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Post Office 1 space per 200 sf. + 1 space per postal vehicle stored on-site 1 space per 10,000 sf. Same as Standard Development Same as Standard Development
    Public Service: Other 1 space per 300 sf. NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Assisted Living 1 space per dwelling unit + 1 space per 3 beds in shared living facilities 1 space Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Congregate Care 1 space per dwelling unit NA Same as Standard Development Same as Standard Development
    Residential Eldercare Facilities: Nursing Home 1 space per 3 beds 1 space per 20 sleeping rooms Same as Standard Development Same as Standard Development
    1. Commercial Uses. The parking requirements for commercial uses are set out in Table 3.5.2C, Required Parking and Loading for Commercial Uses.
    Table 3.5.2C
    Required Parking and Loading for Commercial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agricultural Support / Other Rural Services: Equipment Dealers and Feed Stores 1 space per 300 sf. of office + 1 space per 750 sf. of other floor area 1 space per 75,000 sf.
    Agricultural Support / Other Rural Services: Crop Storage / Packing 1 space per 500 sf. of floor area 1 space per 15,000 sf.
    Alcoholic Beverage Sales: Package 1 space per 200 sf. 1 space per 15,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Alcoholic Beverage Sales: Other 1 space per 25 sf. 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Boarding or Rooming House 1 space per 12 beds NA Same as Standard Development Same as Standard Development
    Car Washes 3 spaces + 2 spaces per bay or stall NA
    Commercial Lodging:
    Full Service Hotel    		 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space + 1/2 of required parking for accessory retail, restaurant, and alcoholic beverage sales uses 1 space + 1 space per 50,000 sf. meeting rooms, restaurants, and shops 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space Same as Standard Development
    Commercial Lodging: Other 1 space per guest room + 2 spaces per 10 guest rooms 1 space per 75 rooms 1 space per guest room + 1 space per 10 guest rooms 1 space
    Commercial Retail: Grocery1 1 spaces per 200 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Commercial Retail: Other1 1 space per 250 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Heavy Retail: Home Center 1 space per 300 sf. of floor area 1 space per 50,000 sf.
    Heavy Retail: Lumberyard 1 space per 200 sf. of office + 1 space per 1,000 sf. yard space 1 space per 50,000 sf. of area put to the heavy retail use
    Heavy Retail: Other 1 space per 300 sf. of office and sales area +1 space per 1,000 sf. of warehouse area 1 space per 50,000 sf.
    Kennel 1 space per 250 sf. 1 space if the use is larger than 10,000 sf. Same as Standard Development Same as Standard Development
    Light Automobile Service 4 spaces + 1 space per service bay
    (pump stations are not counted)    		 1 space Same as Standard Development Same as Standard Development
    Mixed Use See Sec. 3.5.3, Mixed Uses and Shared Parking 1 space per 25,000 sf. of nonresidential uses Same as Standard Development 1 space per 25,000 sf. of nonresidential uses; uses that are less than 10,000 square feet in floor area may use over-the-curb loading from local streets outside of peak hours
    Office: Financial Institutions 1 space per 250 sf. 1 space per 33,000 sf. 3 spaces per 1,000 sf. Same as Standard Development
    Office: Medical 3 spaces per office used by doctor, dentist, chiropractor, or medical professional + 1 space per exam room 1 space per 33,000 sf. 1 space per 250 sf. 1 space per 33,000 sf.
    Office: Call Center 7 spaces per 1,000 sf. 1 space per 33,000 sf. Same as Standard Development Same as Standard Development
    Office: Other 3 spaces per 1,000 sf. 1 space per 33,000 sf. 1 space per 500 sf. Same as Standard Development
    Restaurant: Drive-In or Drive-Through 1 space per 60 sf. 1 space Same as Standard Development Same as Standard Development
    Restaurant: Other 1 space per 3 seats 1 space 1 space per 75 sf. of restaurant area; see alcoholic beverage sales, other, above, for bar or lounge areas Over-the-curb loading allowed during off-peak hours, otherwise 1 space. No additional spaces required for bar or lounge areas.
    Services: Beauty or Nail Salon, Barber Shop, Spa 4 spaces per 1,000 sf. NA 3 spaces / 1,000 sf. NA
    Services: Dry Cleaner 3 spaces per 1,000 sf. 1 space if dry cleaning is done off-site 2.5 spaces / 1,000 sf. Same as Standard Development
    Services: Other 3 spaces per 1,000 sf. + 1 space per stored company vehicle 1 space per 75,000 sf. Same as Standard Development Same as Standard Development
    Shopping Center 1 space per 250 sf. 1 space per 75,000 sf.
    Vehicle Sales, Rental, and Service 1 space per 300 sf. of office + 1 space per 600 sf. of showroom + 1 space per 500 sf. of service area 1 space + 1 space per 25,000 sf. of service area
    Veterinarian 1 space per 250 sf. NA Same as Standard Development Same as Standard Development
    TABLE NOTES:
    1 Grocery areas of supercenter stores (combinations of general retail and grocery in one store) are not counted separately if the floor area used for groceries is less than 40 percent of the total floor area.
    Table 3.5.2C
    Required Parking and Loading for Commercial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agricultural Support / Other Rural Services: Equipment Dealers and Feed Stores 1 space per 300 sf. of office + 1 space per 750 sf. of other floor area 1 space per 75,000 sf.
    Agricultural Support / Other Rural Services: Crop Storage / Packing 1 space per 500 sf. of floor area 1 space per 15,000 sf.
    Alcoholic Beverage Sales: Package 1 space per 200 sf. 1 space per 15,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Alcoholic Beverage Sales: Other 1 space per 25 sf. 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Boarding or Rooming House 1 space per 12 beds NA Same as Standard Development Same as Standard Development
    Car Washes 3 spaces + 2 spaces per bay or stall NA
    Commercial Lodging:
    Full Service Hotel    		 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space + 1/2 of required parking for accessory retail, restaurant, and alcoholic beverage sales uses 1 space + 1 space per 50,000 sf. meeting rooms, restaurants, and shops 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space Same as Standard Development
    Commercial Lodging: Other 1 space per guest room + 2 spaces per 10 guest rooms 1 space per 75 rooms 1 space per guest room + 1 space per 10 guest rooms 1 space
    Commercial Retail: Grocery1 1 spaces per 200 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Commercial Retail: Other1 1 space per 250 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Heavy Retail: Home Center 1 space per 300 sf. of floor area 1 space per 50,000 sf.
    Heavy Retail: Lumberyard 1 space per 200 sf. of office + 1 space per 1,000 sf. yard space 1 space per 50,000 sf. of area put to the heavy retail use
    Heavy Retail: Other 1 space per 300 sf. of office and sales area +1 space per 1,000 sf. of warehouse area 1 space per 50,000 sf.
    Kennel 1 space per 250 sf. 1 space if the use is larger than 10,000 sf. Same as Standard Development Same as Standard Development
    Light Automobile Service 4 spaces + 1 space per service bay
    (pump stations are not counted)    		 1 space Same as Standard Development Same as Standard Development
    Mixed Use See Sec. 3.5.3, Mixed Uses and Shared Parking 1 space per 25,000 sf. of nonresidential uses Same as Standard Development 1 space per 25,000 sf. of nonresidential uses; uses that are less than 10,000 square feet in floor area may use over-the-curb loading from local streets outside of peak hours
    Office: Financial Institutions 1 space per 250 sf. 1 space per 33,000 sf. 3 spaces per 1,000 sf. Same as Standard Development
    Office: Medical 3 spaces per office used by doctor, dentist, chiropractor, or medical professional + 1 space per exam room 1 space per 33,000 sf. 1 space per 250 sf. 1 space per 33,000 sf.
    Office: Call Center 7 spaces per 1,000 sf. 1 space per 33,000 sf. Same as Standard Development Same as Standard Development
    Office: Other 3 spaces per 1,000 sf. 1 space per 33,000 sf. 1 space per 500 sf. Same as Standard Development
    Restaurant: Drive-In or Drive-Through 1 space per 60 sf. 1 space Same as Standard Development Same as Standard Development
    Restaurant: Other 1 space per 3 seats 1 space 1 space per 75 sf. of restaurant area; see alcoholic beverage sales, other, above, for bar or lounge areas Over-the-curb loading allowed during off-peak hours, otherwise 1 space. No additional spaces required for bar or lounge areas.
    Services: Beauty or Nail Salon, Barber Shop, Spa 4 spaces per 1,000 sf. NA 3 spaces / 1,000 sf. NA
    Services: Dry Cleaner 3 spaces per 1,000 sf. 1 space if dry cleaning is done off-site 2.5 spaces / 1,000 sf. Same as Standard Development
    Services: Other 3 spaces per 1,000 sf. + 1 space per stored company vehicle 1 space per 75,000 sf. Same as Standard Development Same as Standard Development
    Shopping Center 1 space per 250 sf. 1 space per 75,000 sf.
    Vehicle Sales, Rental, and Service 1 space per 300 sf. of office + 1 space per 600 sf. of showroom + 1 space per 500 sf. of service area 1 space + 1 space per 25,000 sf. of service area
    Veterinarian 1 space per 250 sf. NA Same as Standard Development Same as Standard Development
    TABLE NOTES:
    1 Grocery areas of supercenter stores (combinations of general retail and grocery in one store) are not counted separately if the floor area used for groceries is less than 40 percent of the total floor area.
    Table 3.5.2C
    Required Parking and Loading for Commercial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agricultural Support / Other Rural Services: Equipment Dealers and Feed Stores 1 space per 300 sf. of office + 1 space per 750 sf. of other floor area 1 space per 75,000 sf.
    Agricultural Support / Other Rural Services: Crop Storage / Packing 1 space per 500 sf. of floor area 1 space per 15,000 sf.
    Alcoholic Beverage Sales: Package 1 space per 200 sf. 1 space per 15,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Alcoholic Beverage Sales: Other 1 space per 25 sf. 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Boarding or Rooming House 1 space per 12 beds NA Same as Standard Development Same as Standard Development
    Car Washes 3 spaces + 2 spaces per bay or stall NA
    Commercial Lodging:
    Full Service Hotel    		 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space + 1/2 of required parking for accessory retail, restaurant, and alcoholic beverage sales uses 1 space + 1 space per 50,000 sf. meeting rooms, restaurants, and shops 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space Same as Standard Development
    Commercial Lodging: Other 1 space per guest room + 2 spaces per 10 guest rooms 1 space per 75 rooms 1 space per guest room + 1 space per 10 guest rooms 1 space
    Commercial Retail: Grocery1 1 spaces per 200 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Commercial Retail: Other1 1 space per 250 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Heavy Retail: Home Center 1 space per 300 sf. of floor area 1 space per 50,000 sf.
    Heavy Retail: Lumberyard 1 space per 200 sf. of office + 1 space per 1,000 sf. yard space 1 space per 50,000 sf. of area put to the heavy retail use
    Heavy Retail: Other 1 space per 300 sf. of office and sales area +1 space per 1,000 sf. of warehouse area 1 space per 50,000 sf.
    Kennel 1 space per 250 sf. 1 space if the use is larger than 10,000 sf. Same as Standard Development Same as Standard Development
    Light Automobile Service 4 spaces + 1 space per service bay
    (pump stations are not counted)    		 1 space Same as Standard Development Same as Standard Development
    Mixed Use See Sec. 3.5.3, Mixed Uses and Shared Parking 1 space per 25,000 sf. of nonresidential uses Same as Standard Development 1 space per 25,000 sf. of nonresidential uses; uses that are less than 10,000 square feet in floor area may use over-the-curb loading from local streets outside of peak hours
    Office: Financial Institutions 1 space per 250 sf. 1 space per 33,000 sf. 3 spaces per 1,000 sf. Same as Standard Development
    Office: Medical 3 spaces per office used by doctor, dentist, chiropractor, or medical professional + 1 space per exam room 1 space per 33,000 sf. 1 space per 250 sf. 1 space per 33,000 sf.
    Office: Call Center 7 spaces per 1,000 sf. 1 space per 33,000 sf. Same as Standard Development Same as Standard Development
    Office: Other 3 spaces per 1,000 sf. 1 space per 33,000 sf. 1 space per 500 sf. Same as Standard Development
    Restaurant: Drive-In or Drive-Through 1 space per 60 sf. 1 space Same as Standard Development Same as Standard Development
    Restaurant: Other 1 space per 3 seats 1 space 1 space per 75 sf. of restaurant area; see alcoholic beverage sales, other, above, for bar or lounge areas Over-the-curb loading allowed during off-peak hours, otherwise 1 space. No additional spaces required for bar or lounge areas.
    Services: Beauty or Nail Salon, Barber Shop, Spa 4 spaces per 1,000 sf. NA 3 spaces / 1,000 sf. NA
    Services: Dry Cleaner 3 spaces per 1,000 sf. 1 space if dry cleaning is done off-site 2.5 spaces / 1,000 sf. Same as Standard Development
    Services: Other 3 spaces per 1,000 sf. + 1 space per stored company vehicle 1 space per 75,000 sf. Same as Standard Development Same as Standard Development
    Shopping Center 1 space per 250 sf. 1 space per 75,000 sf.
    Vehicle Sales, Rental, and Service 1 space per 300 sf. of office + 1 space per 600 sf. of showroom + 1 space per 500 sf. of service area 1 space + 1 space per 25,000 sf. of service area
    Veterinarian 1 space per 250 sf. NA Same as Standard Development Same as Standard Development
    TABLE NOTES:
    1 Grocery areas of supercenter stores (combinations of general retail and grocery in one store) are not counted separately if the floor area used for groceries is less than 40 percent of the total floor area.
    Table 3.5.2C
    Required Parking and Loading for Commercial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agricultural Support / Other Rural Services: Equipment Dealers and Feed Stores 1 space per 300 sf. of office + 1 space per 750 sf. of other floor area 1 space per 75,000 sf.
    Agricultural Support / Other Rural Services: Crop Storage / Packing 1 space per 500 sf. of floor area 1 space per 15,000 sf.
    Alcoholic Beverage Sales: Package 1 space per 200 sf. 1 space per 15,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Alcoholic Beverage Sales: Other 1 space per 25 sf. 1 space Same as Standard Development Over-the-curb loading allowed during off-peak hours, otherwise 1 space
    Boarding or Rooming House 1 space per 12 beds NA Same as Standard Development Same as Standard Development
    Car Washes 3 spaces + 2 spaces per bay or stall NA
    Commercial Lodging:
    Full Service Hotel    		 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space + 1/2 of required parking for accessory retail, restaurant, and alcoholic beverage sales uses 1 space + 1 space per 50,000 sf. meeting rooms, restaurants, and shops 1 space per guest room + 2 spaces per 10 guest rooms + 1 space per 100 sf. of meeting space Same as Standard Development
    Commercial Lodging: Other 1 space per guest room + 2 spaces per 10 guest rooms 1 space per 75 rooms 1 space per guest room + 1 space per 10 guest rooms 1 space
    Commercial Retail: Grocery1 1 spaces per 200 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Commercial Retail: Other1 1 space per 250 sf. 1 space per 25,000 sf. 3.5 spaces per 1,000 sf. Same as Standard Development
    Heavy Retail: Home Center 1 space per 300 sf. of floor area 1 space per 50,000 sf.
    Heavy Retail: Lumberyard 1 space per 200 sf. of office + 1 space per 1,000 sf. yard space 1 space per 50,000 sf. of area put to the heavy retail use
    Heavy Retail: Other 1 space per 300 sf. of office and sales area +1 space per 1,000 sf. of warehouse area 1 space per 50,000 sf.
    Kennel 1 space per 250 sf. 1 space if the use is larger than 10,000 sf. Same as Standard Development Same as Standard Development
    Light Automobile Service 4 spaces + 1 space per service bay
    (pump stations are not counted)    		 1 space Same as Standard Development Same as Standard Development
    Mixed Use See Sec. 3.5.3, Mixed Uses and Shared Parking 1 space per 25,000 sf. of nonresidential uses Same as Standard Development 1 space per 25,000 sf. of nonresidential uses; uses that are less than 10,000 square feet in floor area may use over-the-curb loading from local streets outside of peak hours
    Office: Financial Institutions 1 space per 250 sf. 1 space per 33,000 sf. 3 spaces per 1,000 sf. Same as Standard Development
    Office: Medical 3 spaces per office used by doctor, dentist, chiropractor, or medical professional + 1 space per exam room 1 space per 33,000 sf. 1 space per 250 sf. 1 space per 33,000 sf.
    Office: Call Center 7 spaces per 1,000 sf. 1 space per 33,000 sf. Same as Standard Development Same as Standard Development
    Office: Other 3 spaces per 1,000 sf. 1 space per 33,000 sf. 1 space per 500 sf. Same as Standard Development
    Restaurant: Drive-In or Drive-Through 1 space per 60 sf. 1 space Same as Standard Development Same as Standard Development
    Restaurant: Other 1 space per 3 seats 1 space 1 space per 75 sf. of restaurant area; see alcoholic beverage sales, other, above, for bar or lounge areas Over-the-curb loading allowed during off-peak hours, otherwise 1 space. No additional spaces required for bar or lounge areas.
    Services: Beauty or Nail Salon, Barber Shop, Spa 4 spaces per 1,000 sf. NA 3 spaces / 1,000 sf. NA
    Services: Dry Cleaner 3 spaces per 1,000 sf. 1 space if dry cleaning is done off-site 2.5 spaces / 1,000 sf. Same as Standard Development
    Services: Other 3 spaces per 1,000 sf. + 1 space per stored company vehicle 1 space per 75,000 sf. Same as Standard Development Same as Standard Development
    Shopping Center 1 space per 250 sf. 1 space per 75,000 sf.
    Vehicle Sales, Rental, and Service 1 space per 300 sf. of office + 1 space per 600 sf. of showroom + 1 space per 500 sf. of service area 1 space + 1 space per 25,000 sf. of service area
    Veterinarian 1 space per 250 sf. NA Same as Standard Development Same as Standard Development
    TABLE NOTES:
    1 Grocery areas of supercenter stores (combinations of general retail and grocery in one store) are not counted separately if the floor area used for groceries is less than 40 percent of the total floor area.
    1. Recreation and Amusement Uses. The parking requirements for recreation and amusement uses are set out in Table 3.5.2D, Required Parking and Loading for Recreation and Amusement Uses.
    Table 3.5.2D
    Required Parking and Loading for Recreation and Amusement Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Adult Uses Greater of:4 spaces per 5 seats; or
    1 space per 150 sf. of floor area    		 1 space
    Campgrounds 1 space per camp site + 1 space per 20 camp sites NA
    Indoor Commercial Amusement: Bowling Alley 5 spaces per lane 1 space 3 spaces per lane 1 space
    Indoor Commercial Amusement: Movie Theaters 1 space per 3 seats + 3 spaces per screen 1 space 1 space per 4 seats 1 space
    Indoor Commercial Amusement: Skating Rinks 1 space per 100 sf. of rink surface 1 space Same as Standard Development Same as Standard Development
    Indoor Commercial Amusement: Other 6 spaces per 1,000 sf. 1 space 1 space per 200 ​sf. NA
    Outdoor Commercial Amusement: Outdoor Arenas 1 space per 3 seats 1 space per 500 seats 1 space per 6 people capacity if capacity exceeds 500; otherwise no spaces required 1 space per 500 seats
    Outdoor Commercial Amusement: Other Special Study Special Study Same as Standard Development Same as Standard Development
    Indoor Recreation: Swimming Pool 1 space per 2 persons capacity 1 space 1 space per 200 sf. of pool 1 space
    Indoor Recreation: Tennis, Racquetball; Handball 2 spaces + 1 space per court + 1 space per 5 courts 1 space 2 spaces + 1 space per court 1 space
    Indoor Recreation: Community Recreation Center 1 space per 400 sf. 1 space per 50,000 sf. 1 space per 500 sf. 1 space
    Indoor Recreation: Other 1 space per 400 sf. 1 space Same as Standard Development Same as Standard Development
    Outdoor Recreation: Athletic Fields Greater of: 1 space per 4 seats (spectator); or
    30 spaces per athletic field    		 NA 15 spaces per field NA
    Outdoor Recreation: Day Camp 1 space per 4 campers NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Driving Range 3 spaces per 4 stations NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Mini Golf 4 spaces per hole NA 3 spaces per hole Same as Standard Development
    Outdoor Recreation: Golf Course 4 spaces per hole NA 1.5 spaces per hole Same as Standard Development
    Outdoor Recreation: Playgrounds 12 spaces per acre NA 1 space per 6,000 sf. of play area Same as Standard Development
    Outdoor Recreation: Swimming Pool 1 space per 250 sf. of pool NA 1 space per 500 sf. of pool Same as Standard Development
    Outdoor Recreation: Tennis Courts 2 spaces per court + 1 space per 250 sf. of clubhouse or pro shop NA 1 space per court + 1 space per 250 sf. of clubhouse or pro shop Same as Standard Development
    Outdoor Recreation: Other Active Recreation 12 spaces per acre NA 1 space per 10,000 sf. of active recreation area Same as Standard Development
    Outdoor Recreation: Passive Recreation 2 spaces per acre NA 1 space per 2 acres up to 50 acres + 1 space per 6 acres over 50 acres Same as Standard Development
    Table 3.5.2D
    Required Parking and Loading for Recreation and Amusement Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Adult Uses Greater of:4 spaces per 5 seats; or
    1 space per 150 sf. of floor area    		 1 space
    Campgrounds 1 space per camp site + 1 space per 20 camp sites NA
    Indoor Commercial Amusement: Bowling Alley 5 spaces per lane 1 space 3 spaces per lane 1 space
    Indoor Commercial Amusement: Movie Theaters 1 space per 3 seats + 3 spaces per screen 1 space 1 space per 4 seats 1 space
    Indoor Commercial Amusement: Skating Rinks 1 space per 100 sf. of rink surface 1 space Same as Standard Development Same as Standard Development
    Indoor Commercial Amusement: Other 6 spaces per 1,000 sf. 1 space 1 space per 200 ​sf. NA
    Outdoor Commercial Amusement: Outdoor Arenas 1 space per 3 seats 1 space per 500 seats 1 space per 6 people capacity if capacity exceeds 500; otherwise no spaces required 1 space per 500 seats
    Outdoor Commercial Amusement: Other Special Study Special Study Same as Standard Development Same as Standard Development
    Indoor Recreation: Swimming Pool 1 space per 2 persons capacity 1 space 1 space per 200 sf. of pool 1 space
    Indoor Recreation: Tennis, Racquetball; Handball 2 spaces + 1 space per court + 1 space per 5 courts 1 space 2 spaces + 1 space per court 1 space
    Indoor Recreation: Community Recreation Center 1 space per 400 sf. 1 space per 50,000 sf. 1 space per 500 sf. 1 space
    Indoor Recreation: Other 1 space per 400 sf. 1 space Same as Standard Development Same as Standard Development
    Outdoor Recreation: Athletic Fields Greater of: 1 space per 4 seats (spectator); or
    30 spaces per athletic field    		 NA 15 spaces per field NA
    Outdoor Recreation: Day Camp 1 space per 4 campers NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Driving Range 3 spaces per 4 stations NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Mini Golf 4 spaces per hole NA 3 spaces per hole Same as Standard Development
    Outdoor Recreation: Golf Course 4 spaces per hole NA 1.5 spaces per hole Same as Standard Development
    Outdoor Recreation: Playgrounds 12 spaces per acre NA 1 space per 6,000 sf. of play area Same as Standard Development
    Outdoor Recreation: Swimming Pool 1 space per 250 sf. of pool NA 1 space per 500 sf. of pool Same as Standard Development
    Outdoor Recreation: Tennis Courts 2 spaces per court + 1 space per 250 sf. of clubhouse or pro shop NA 1 space per court + 1 space per 250 sf. of clubhouse or pro shop Same as Standard Development
    Outdoor Recreation: Other Active Recreation 12 spaces per acre NA 1 space per 10,000 sf. of active recreation area Same as Standard Development
    Outdoor Recreation: Passive Recreation 2 spaces per acre NA 1 space per 2 acres up to 50 acres + 1 space per 6 acres over 50 acres Same as Standard Development
    Table 3.5.2D
    Required Parking and Loading for Recreation and Amusement Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Adult Uses Greater of:4 spaces per 5 seats; or
    1 space per 150 sf. of floor area    		 1 space
    Campgrounds 1 space per camp site + 1 space per 20 camp sites NA
    Indoor Commercial Amusement: Bowling Alley 5 spaces per lane 1 space 3 spaces per lane 1 space
    Indoor Commercial Amusement: Movie Theaters 1 space per 3 seats + 3 spaces per screen 1 space 1 space per 4 seats 1 space
    Indoor Commercial Amusement: Skating Rinks 1 space per 100 sf. of rink surface 1 space Same as Standard Development Same as Standard Development
    Indoor Commercial Amusement: Other 6 spaces per 1,000 sf. 1 space 1 space per 200 ​sf. NA
    Outdoor Commercial Amusement: Outdoor Arenas 1 space per 3 seats 1 space per 500 seats 1 space per 6 people capacity if capacity exceeds 500; otherwise no spaces required 1 space per 500 seats
    Outdoor Commercial Amusement: Other Special Study Special Study Same as Standard Development Same as Standard Development
    Indoor Recreation: Swimming Pool 1 space per 2 persons capacity 1 space 1 space per 200 sf. of pool 1 space
    Indoor Recreation: Tennis, Racquetball; Handball 2 spaces + 1 space per court + 1 space per 5 courts 1 space 2 spaces + 1 space per court 1 space
    Indoor Recreation: Community Recreation Center 1 space per 400 sf. 1 space per 50,000 sf. 1 space per 500 sf. 1 space
    Indoor Recreation: Other 1 space per 400 sf. 1 space Same as Standard Development Same as Standard Development
    Outdoor Recreation: Athletic Fields Greater of: 1 space per 4 seats (spectator); or
    30 spaces per athletic field    		 NA 15 spaces per field NA
    Outdoor Recreation: Day Camp 1 space per 4 campers NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Driving Range 3 spaces per 4 stations NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Mini Golf 4 spaces per hole NA 3 spaces per hole Same as Standard Development
    Outdoor Recreation: Golf Course 4 spaces per hole NA 1.5 spaces per hole Same as Standard Development
    Outdoor Recreation: Playgrounds 12 spaces per acre NA 1 space per 6,000 sf. of play area Same as Standard Development
    Outdoor Recreation: Swimming Pool 1 space per 250 sf. of pool NA 1 space per 500 sf. of pool Same as Standard Development
    Outdoor Recreation: Tennis Courts 2 spaces per court + 1 space per 250 sf. of clubhouse or pro shop NA 1 space per court + 1 space per 250 sf. of clubhouse or pro shop Same as Standard Development
    Outdoor Recreation: Other Active Recreation 12 spaces per acre NA 1 space per 10,000 sf. of active recreation area Same as Standard Development
    Outdoor Recreation: Passive Recreation 2 spaces per acre NA 1 space per 2 acres up to 50 acres + 1 space per 6 acres over 50 acres Same as Standard Development
    Table 3.5.2D
    Required Parking and Loading for Recreation and Amusement Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Adult Uses Greater of:4 spaces per 5 seats; or
    1 space per 150 sf. of floor area    		 1 space
    Campgrounds 1 space per camp site + 1 space per 20 camp sites NA
    Indoor Commercial Amusement: Bowling Alley 5 spaces per lane 1 space 3 spaces per lane 1 space
    Indoor Commercial Amusement: Movie Theaters 1 space per 3 seats + 3 spaces per screen 1 space 1 space per 4 seats 1 space
    Indoor Commercial Amusement: Skating Rinks 1 space per 100 sf. of rink surface 1 space Same as Standard Development Same as Standard Development
    Indoor Commercial Amusement: Other 6 spaces per 1,000 sf. 1 space 1 space per 200 ​sf. NA
    Outdoor Commercial Amusement: Outdoor Arenas 1 space per 3 seats 1 space per 500 seats 1 space per 6 people capacity if capacity exceeds 500; otherwise no spaces required 1 space per 500 seats
    Outdoor Commercial Amusement: Other Special Study Special Study Same as Standard Development Same as Standard Development
    Indoor Recreation: Swimming Pool 1 space per 2 persons capacity 1 space 1 space per 200 sf. of pool 1 space
    Indoor Recreation: Tennis, Racquetball; Handball 2 spaces + 1 space per court + 1 space per 5 courts 1 space 2 spaces + 1 space per court 1 space
    Indoor Recreation: Community Recreation Center 1 space per 400 sf. 1 space per 50,000 sf. 1 space per 500 sf. 1 space
    Indoor Recreation: Other 1 space per 400 sf. 1 space Same as Standard Development Same as Standard Development
    Outdoor Recreation: Athletic Fields Greater of: 1 space per 4 seats (spectator); or
    30 spaces per athletic field    		 NA 15 spaces per field NA
    Outdoor Recreation: Day Camp 1 space per 4 campers NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Driving Range 3 spaces per 4 stations NA Same as Standard Development Same as Standard Development
    Outdoor Recreation: Mini Golf 4 spaces per hole NA 3 spaces per hole Same as Standard Development
    Outdoor Recreation: Golf Course 4 spaces per hole NA 1.5 spaces per hole Same as Standard Development
    Outdoor Recreation: Playgrounds 12 spaces per acre NA 1 space per 6,000 sf. of play area Same as Standard Development
    Outdoor Recreation: Swimming Pool 1 space per 250 sf. of pool NA 1 space per 500 sf. of pool Same as Standard Development
    Outdoor Recreation: Tennis Courts 2 spaces per court + 1 space per 250 sf. of clubhouse or pro shop NA 1 space per court + 1 space per 250 sf. of clubhouse or pro shop Same as Standard Development
    Outdoor Recreation: Other Active Recreation 12 spaces per acre NA 1 space per 10,000 sf. of active recreation area Same as Standard Development
    Outdoor Recreation: Passive Recreation 2 spaces per acre NA 1 space per 2 acres up to 50 acres + 1 space per 6 acres over 50 acres Same as Standard Development
    1. Industrial Uses. The parking requirements for industrial uses are set out in Table 3.5.2E, Required Parking and Loading for Industrial Uses.
    Table 3.5.2E
    Required Parking and Loading for Industrial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Disposal 5 spaces per 4 disposal vehicles 1 space per disposal vehicle
    Extraction Special Study Special Study
    Heavy Industry Special Study Special Study
    Light Industry: Manufacturing, Processing, Assembly 1 space per 750 sf. 1 space per 20,000 sf.
    Light Industry: Laboratories, Research and Development, Testing 1 space per 300 sf. 1 space per 20,000 sf. Same as Standard Development Same as Standard Development
    Light Industry: Other 1 space per 500 sf. 1 space per 20,000 sf.
    Recycling / Salvage Special Study Special Study
    Utilities, Community Special Study Special Study Same as Standard Development Same as Standard Development
    Utilities, Neighborhood 1 space (may be grass) NA Same as Standard Development Same as Standard Development
    Warehousing and Transportation 1 space per 300 sf. of office + 1 space per 1,000 sf. of warehouse + 1 space per loading dock Greater of:1 space per 20,000 sf.; or
    1 space per loading bay
    Table 3.5.2E
    Required Parking and Loading for Industrial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Disposal 5 spaces per 4 disposal vehicles 1 space per disposal vehicle
    Extraction Special Study Special Study
    Heavy Industry Special Study Special Study
    Light Industry: Manufacturing, Processing, Assembly 1 space per 750 sf. 1 space per 20,000 sf.
    Light Industry: Laboratories, Research and Development, Testing 1 space per 300 sf. 1 space per 20,000 sf. Same as Standard Development Same as Standard Development
    Light Industry: Other 1 space per 500 sf. 1 space per 20,000 sf.
    Recycling / Salvage Special Study Special Study
    Utilities, Community Special Study Special Study Same as Standard Development Same as Standard Development
    Utilities, Neighborhood 1 space (may be grass) NA Same as Standard Development Same as Standard Development
    Warehousing and Transportation 1 space per 300 sf. of office + 1 space per 1,000 sf. of warehouse + 1 space per loading dock Greater of:1 space per 20,000 sf.; or
    1 space per loading bay
    Table 3.5.2E
    Required Parking and Loading for Industrial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Disposal 5 spaces per 4 disposal vehicles 1 space per disposal vehicle
    Extraction Special Study Special Study
    Heavy Industry Special Study Special Study
    Light Industry: Manufacturing, Processing, Assembly 1 space per 750 sf. 1 space per 20,000 sf.
    Light Industry: Laboratories, Research and Development, Testing 1 space per 300 sf. 1 space per 20,000 sf. Same as Standard Development Same as Standard Development
    Light Industry: Other 1 space per 500 sf. 1 space per 20,000 sf.
    Recycling / Salvage Special Study Special Study
    Utilities, Community Special Study Special Study Same as Standard Development Same as Standard Development
    Utilities, Neighborhood 1 space (may be grass) NA Same as Standard Development Same as Standard Development
    Warehousing and Transportation 1 space per 300 sf. of office + 1 space per 1,000 sf. of warehouse + 1 space per loading dock Greater of:1 space per 20,000 sf.; or
    1 space per loading bay
    Table 3.5.2E
    Required Parking and Loading for Industrial Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Disposal 5 spaces per 4 disposal vehicles 1 space per disposal vehicle
    Extraction Special Study Special Study
    Heavy Industry Special Study Special Study
    Light Industry: Manufacturing, Processing, Assembly 1 space per 750 sf. 1 space per 20,000 sf.
    Light Industry: Laboratories, Research and Development, Testing 1 space per 300 sf. 1 space per 20,000 sf. Same as Standard Development Same as Standard Development
    Light Industry: Other 1 space per 500 sf. 1 space per 20,000 sf.
    Recycling / Salvage Special Study Special Study
    Utilities, Community Special Study Special Study Same as Standard Development Same as Standard Development
    Utilities, Neighborhood 1 space (may be grass) NA Same as Standard Development Same as Standard Development
    Warehousing and Transportation 1 space per 300 sf. of office + 1 space per 1,000 sf. of warehouse + 1 space per loading dock Greater of:1 space per 20,000 sf.; or
    1 space per loading bay
    1. Agricultural Uses. The parking requirements for agricultural uses are set out in Table 3.5.2F, Required Parking and Loading for Agricultural Uses.
    Table 3.5.2F
    Required Parking and Loading for Agricultural Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agriculture or Forestry 2 spaces per dwelling unit used as a farm residence NA
    Commercial Stables 1 space per 6 stalls 1 space per 24 stalls Same as Standard Development Same as Standard Development
    Nursery or Greenhouse: Wholesale 3 spaces per 1,000 sf. of office or sales floor area + 10 spaces per acre of outdoor nursery area 2 spaces per 5 acres
    Nursery or Greenhouse: Retail 1 space per 250 sf. of enclosed floor area + 15 spaces per acre of outdoor nursery area 3 spaces per 5 acres
    Table 3.5.2F
    Required Parking and Loading for Agricultural Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agriculture or Forestry 2 spaces per dwelling unit used as a farm residence NA
    Commercial Stables 1 space per 6 stalls 1 space per 24 stalls Same as Standard Development Same as Standard Development
    Nursery or Greenhouse: Wholesale 3 spaces per 1,000 sf. of office or sales floor area + 10 spaces per acre of outdoor nursery area 2 spaces per 5 acres
    Nursery or Greenhouse: Retail 1 space per 250 sf. of enclosed floor area + 15 spaces per acre of outdoor nursery area 3 spaces per 5 acres
    Table 3.5.2F
    Required Parking and Loading for Agricultural Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agriculture or Forestry 2 spaces per dwelling unit used as a farm residence NA
    Commercial Stables 1 space per 6 stalls 1 space per 24 stalls Same as Standard Development Same as Standard Development
    Nursery or Greenhouse: Wholesale 3 spaces per 1,000 sf. of office or sales floor area + 10 spaces per acre of outdoor nursery area 2 spaces per 5 acres
    Nursery or Greenhouse: Retail 1 space per 250 sf. of enclosed floor area + 15 spaces per acre of outdoor nursery area 3 spaces per 5 acres
    Table 3.5.2F
    Required Parking and Loading for Agricultural Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Agriculture or Forestry 2 spaces per dwelling unit used as a farm residence NA
    Commercial Stables 1 space per 6 stalls 1 space per 24 stalls Same as Standard Development Same as Standard Development
    Nursery or Greenhouse: Wholesale 3 spaces per 1,000 sf. of office or sales floor area + 10 spaces per acre of outdoor nursery area 2 spaces per 5 acres
    Nursery or Greenhouse: Retail 1 space per 250 sf. of enclosed floor area + 15 spaces per acre of outdoor nursery area 3 spaces per 5 acres
    1. Special Uses. The parking requirements for special uses are set out in Table 3.5.2G, Required Parking and Loading for Special Uses.
    Table 3.5.2G
    Required Parking and Loading for Special Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Airports Special Study Special Study
    Parking and Transit Facilities: Stand Alone Parking Lot NA NA Same as Standard Development Same as Standard Development
    Parking and Transit Facilities: Transit Facility Special Study Special Study Same as Standard Development Same as Standard Development
    Self-Storage Facilities 1 space per 20 storage units + 1 space per on-site caretaker residence NA
    Wireless Telecommunications Facilities 1 per freestanding facility (may be grass) NA Same as Standard Development Same as Standard Development
    Table 3.5.2G
    Required Parking and Loading for Special Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Airports Special Study Special Study
    Parking and Transit Facilities: Stand Alone Parking Lot NA NA Same as Standard Development Same as Standard Development
    Parking and Transit Facilities: Transit Facility Special Study Special Study Same as Standard Development Same as Standard Development
    Self-Storage Facilities 1 space per 20 storage units + 1 space per on-site caretaker residence NA
    Wireless Telecommunications Facilities 1 per freestanding facility (may be grass) NA Same as Standard Development Same as Standard Development
    Table 3.5.2G
    Required Parking and Loading for Special Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Airports Special Study Special Study
    Parking and Transit Facilities: Stand Alone Parking Lot NA NA Same as Standard Development Same as Standard Development
    Parking and Transit Facilities: Transit Facility Special Study Special Study Same as Standard Development Same as Standard Development
    Self-Storage Facilities 1 space per 20 storage units + 1 space per on-site caretaker residence NA
    Wireless Telecommunications Facilities 1 per freestanding facility (may be grass) NA Same as Standard Development Same as Standard Development
    Table 3.5.2G
    Required Parking and Loading for Special Uses
    Use Standard Development Traditional Neighborhood Development
    Required Parking Spaces Required Loading Spaces Required Parking Spaces Required Loading Spaces
    Airports Special Study Special Study
    Parking and Transit Facilities: Stand Alone Parking Lot NA NA Same as Standard Development Same as Standard Development
    Parking and Transit Facilities: Transit Facility Special Study Special Study Same as Standard Development Same as Standard Development
    Self-Storage Facilities 1 space per 20 storage units + 1 space per on-site caretaker residence NA
    Wireless Telecommunications Facilities 1 per freestanding facility (may be grass) NA Same as Standard Development Same as Standard Development
    1. Uses Not Listed. The Director shall determine the parking requirements for uses that are not listed based on:
      1. The uses in this Section that are most similar to the proposed uses; or
      2. Parking studies of similar uses that are provided by the applicant and certified by a qualified professional engineer.

    Effective on: 11/1/2013

    Sec. 3.5.3 Mixed Uses and Shared Parking

  • Generally. The Parish Council recognizes that uses may have different hours of operation and peak parking demand hours. The Parish desires to encourage the sharing of parking for its potential to reduce paved areas and / or enhance the efficiency of land use. Where a mix of uses creates synergy with respect to the use of parking spaces due to differences in when the spaces are most likely to be used, an applicant may submit a special study to demonstrate that the parking required to serve mixed uses is less than the total of the parking requirements for each individual use.
  • Special Shared Parking Study. The special study shall be undertaken by a qualified traffic engineer, and shall:
    1. Review peak parking demand periods for the proposed uses during a 24-hour weekday and each weekend day, and shall propose a required number of parking spaces based on the combined peak hour demand for parking.
    2. Provide data on the following:
      1. The sensitivity of the proposed uses to change. For example, a center with no restaurant could have significant changes in parking if a restaurant was added.
      2. Similar mixes of uses in other areas of the community.
      3. Degree of variability of parking for individual uses (average, range, and standard deviation).
    3. The Parish may require a reserved open area if it believes that the risk of parking needs changing over time so warrants. Once the project is occupied and well established, if there is a surplus of parking, the applicant may petition for additional development capacity and parking using the reserved area.

    • Effective on: 11/1/2013

    Sec. 3.5.4 Parking and Loading Design

  • Dimensions of Standard Parking Spaces. Parking spaces shall have the following dimensions.
    1. Generally: 9 ft. width x 20 ft. standard depth.
    2. 90-degree parking spaces that abut curb or edge of pavement (allowing for overhang): 9 ft. width x 18 ft. reduced depth. See Figure 3.5.4A, Parking Space Dimensions.
    3. Parallel (0 degree) parking spaces: 8 ft. width x 20 ft. depth.
    • Figure 3.5.4A
    Parking Space Dimensions
    Illustrative Parking Space Dimensions
    1. Dimensions of Disabled Parking Spaces. Disabled parking spaces shall be dimensioned as required by the Americans with Disabilities Act Accessibility Guidelines.
    2. Number of Disabled Parking Spaces. Disabled parking spaces shall be provided as required by the Americans with Disabilities Act Accessibility Guidelines, as amended. The requirements as of the effective date are set out in Table 3.5.4A, Disabled Parking Requirements; however, in the event of amendment to ADAAG, ADAAG standards shall control. Disabled parking is included in the total number of required parking spaces.
    Table 3.5.4A
    Disabled Parking Requirements
    Number of Required Parking SpacesNumber of Disabled SpacesNumber of Disabled Spaces that
    Must be Van Accessible1
    1 to 25 1 1
    26 to 50 2 1
    51 to 75 3 1
    76 to 100 4 1
    101 to 150 5 1
    151 to 200 6 1
    201 to 300 7 1
    301 to 400 8 1
    401 to 500 9 2
    501 to 1000 2 percent of total 1 out of 8 disabled parking spaces,
    rounded up
    1001 and over 20 plus 1 for each 100 over 1,000 1 out of 8 disabled parking spaces,
    rounded up
    TABLE NOTE:
    1 Van accessible spaces are counted as disabled parking spaces and are not an additional requirement. ADAAG requirements also provide for "universal spaces" which eliminate the need for designated van accessible spaces.
    Table 3.5.4A
    Disabled Parking Requirements
    Number of Required Parking SpacesNumber of Disabled SpacesNumber of Disabled Spaces that
    Must be Van Accessible1
    1 to 25 1 1
    26 to 50 2 1
    51 to 75 3 1
    76 to 100 4 1
    101 to 150 5 1
    151 to 200 6 1
    201 to 300 7 1
    301 to 400 8 1
    401 to 500 9 2
    501 to 1000 2 percent of total 1 out of 8 disabled parking spaces,
    rounded up
    1001 and over 20 plus 1 for each 100 over 1,000 1 out of 8 disabled parking spaces,
    rounded up
    TABLE NOTE:
    1 Van accessible spaces are counted as disabled parking spaces and are not an additional requirement. ADAAG requirements also provide for "universal spaces" which eliminate the need for designated van accessible spaces.
    Table 3.5.4A
    Disabled Parking Requirements
    Number of Required Parking SpacesNumber of Disabled SpacesNumber of Disabled Spaces that
    Must be Van Accessible1
    1 to 25 1 1
    26 to 50 2 1
    51 to 75 3 1
    76 to 100 4 1
    101 to 150 5 1
    151 to 200 6 1
    201 to 300 7 1
    301 to 400 8 1
    401 to 500 9 2
    501 to 1000 2 percent of total 1 out of 8 disabled parking spaces,
    rounded up
    1001 and over 20 plus 1 for each 100 over 1,000 1 out of 8 disabled parking spaces,
    rounded up
    TABLE NOTE:
    1 Van accessible spaces are counted as disabled parking spaces and are not an additional requirement. ADAAG requirements also provide for "universal spaces" which eliminate the need for designated van accessible spaces.
    Table 3.5.4A
    Disabled Parking Requirements
    Number of Required Parking SpacesNumber of Disabled SpacesNumber of Disabled Spaces that
    Must be Van Accessible1
    1 to 25 1 1
    26 to 50 2 1
    51 to 75 3 1
    76 to 100 4 1
    101 to 150 5 1
    151 to 200 6 1
    201 to 300 7 1
    301 to 400 8 1
    401 to 500 9 2
    501 to 1000 2 percent of total 1 out of 8 disabled parking spaces,
    rounded up
    1001 and over 20 plus 1 for each 100 over 1,000 1 out of 8 disabled parking spaces,
    rounded up
    TABLE NOTE:
    1 Van accessible spaces are counted as disabled parking spaces and are not an additional requirement. ADAAG requirements also provide for "universal spaces" which eliminate the need for designated van accessible spaces.
    1. Parking Space Markings.
      1. All standard and disabled parking spaces that are located in parking lots or provided on-street on a street provided by the developer shall be clearly marked.
      2. Parking spaces for residential uses that are located in private garages, carports, or individual driveways do not have to be marked. An area on a private residential lot is considered a parking space if:
        1. The area is at least 9 feet by 18 feet in dimension;
        2. The area does not encroach upon a public sidewalk;
        3. The area is hard-surfaced; and
        4. The area is accessible from the street.
    1. Location of Off-Street Parking.
      1. On-Site Off-Street Parking. On-site off-street parking shall be set back behind any required bufferyard (See Section 3.11.1, Bufferyard Requirements). Parking spaces, aisles, and turning areas shall not encroach upon or overhang any street, driveway, or public right-of-way. See Figure 3.5.4B, On-Site Off-Street Parking Location.
    Figure 3.5.4B
    On-Site Off-Street Parking Location
    Illustrative Off-Street Parking Location
      1. Off-Site Off-Street Parking. Parking or overflow parking is generally not allowed in off-site locations. However, in Traditional Neighborhood Development, it is allowed as provided in Table 3.5.4B, Distance to Required Parking.
    Table 3.5.4B
    Distance to Required Parking
    UseLocation of Required ParkingLocation of Overflow or Valet Parking Spaces
    Traditional Neighborhood Development: Single-Family Attached and Multiple-family Uses Boundary of parking lot within 150 feet of principal building being served NA
    Traditional Neighborhood Development: All Nonresidential Uses Boundary of parking lot within 200 feet of principal building being served Within 300 feet of principal building being served
    Table 3.5.4B
    Distance to Required Parking
    UseLocation of Required ParkingLocation of Overflow or Valet Parking Spaces
    Traditional Neighborhood Development: Single-Family Attached and Multiple-family Uses Boundary of parking lot within 150 feet of principal building being served NA
    Traditional Neighborhood Development: All Nonresidential Uses Boundary of parking lot within 200 feet of principal building being served Within 300 feet of principal building being served
    Table 3.5.4B
    Distance to Required Parking
    UseLocation of Required ParkingLocation of Overflow or Valet Parking Spaces
    Traditional Neighborhood Development: Single-Family Attached and Multiple-family Uses Boundary of parking lot within 150 feet of principal building being served NA
    Traditional Neighborhood Development: All Nonresidential Uses Boundary of parking lot within 200 feet of principal building being served Within 300 feet of principal building being served
    Table 3.5.4B
    Distance to Required Parking
    UseLocation of Required ParkingLocation of Overflow or Valet Parking Spaces
    Traditional Neighborhood Development: Single-Family Attached and Multiple-family Uses Boundary of parking lot within 150 feet of principal building being served NA
    Traditional Neighborhood Development: All Nonresidential Uses Boundary of parking lot within 200 feet of principal building being served Within 300 feet of principal building being served
      1. Guest Parking. In residential districts, guest parking in excess of the minimum parking requirements may be permitted in platted guest parking islands within enlarged cul-de-sacs. However, in no case shall required parking be located within guest parking islands.
    1. Off-Street Loading.
      1. Generally. All uses shall provide off-street loading as required by Section 3.5.2, Required Parking and Loading. Loading spaces shall be designed as follows:
      2. Dimensions. The dimensions of required loading spaces shall depend upon whether the use will be served by semi-trailers. Commercial retail and industrial uses that are larger than 40,000 square feet shall be presumed to require semi-trailer loading unless the applicant demonstrates otherwise.
        1. Minimum width of loading bay (side to side): 12 feet.
        2. Minimum length of loading bay (front to back):
          1. For semi-trailers: 60 feet.
          2. All other loading spaces: 35 feet.
        3. Minimum vertical clearance: 14 feet.
      3. Use of Right-of-Way. Where off-street loading areas are required, at no time shall any part of a truck or van be allowed to extend into a public right-of-way while the truck or van is being loaded or unloaded.
      4. Maneuvering Space. Adequate off-street truck maneuvering space shall be provided on lot (and not within any public street right-of-way or other public property), so that trucks can maneuver to the docking area.
      5. Location. All loading areas shall be located on the same lot as the building or lot served by the loading area. Semi-trailer loading spaces and loading docks shall be located behind buildings and screened from view from adjacent properties and public rights-of-way.
      6. Fire Exit or Emergency Access. Off-street loading facilities shall be designed so as not to interfere with any fire exits or emergency access facilities to either a building or site.
    2. Surfacing. Off-street parking areas shall be surfaced as follows:
      1. In general, off-street parking areas that are required to have more than three parking spaces shall be graded and surfaced with a material approved by the Director of Public Works that will protect against potholes, erosion, and dust.
      2. The Director of Public Works may permit less durable surfaces (such as grass pavers, crushed stone, or gravel) for off-street parking facilities that serve low-turnover uses or overflow parking needs, provided that:
        1. The perimeter of such parking areas is defined by bricks, stones, railroad ties, or other similar devices;
        2. Surfaces with loose materials are set back at least 25 feet from a public street; and
        3. The material does not generate inordinate amounts of dust.
    3. Maintenance. Off-street parking surfaces shall be kept in good condition and parking space lines or markings on hard-surfaced lots shall be kept clearly visible and distinct.

    Effective on: 2/4/2014

    Sec. 3.6.1 Street Design Objectives and Review

  • Generally. In order to provide for streets of suitable location, width, and improvement to accommodate prospective traffic and afford satisfactory access to police, firefighting, sanitation, and road maintenance equipment, and to coordinate streets so as to compose a convenient system and avoid undue hardships to adjoining properties, applicable geometric and design standards are shown by classification within Table 3.6.2, Geometric and Design Standards for Streets, and other applicable provisions of this Division. The required street classification may be indicated on the Parish Thoroughfare Plan or it shall be determined by the Director. The Director reserves the right to reclassify a roadway for more intensive use if conditions warrant such a change. The reclassification of a street will apply to all undeveloped portions of a subdivision not yet submitted to the Director for approval.
  • Integration. New streets and substantially improved existing streets shall integrate into the existing street pattern so as to:
    1. Address the new development's circulation needs;
    2. Provide a pattern of streets that facilitates navigation within the Parish; and
    3. Where higher-order functional classifications are involved, facilitate Parishwide traffic movements.
  • Safety. New streets and substantially improved existing streets shall provide a safe and convenient layout and design.
  • Character. New streets and substantially improved existing streets shall correspond to and reinforce the community character of the district(s) in which they are constructed. Within TNDs, new streets shall be designed to reinforce the pedestrian environment and encourage use by pedestrians and bicyclists.
  • Natural Resources. New streets and substantially improved existing streets shall respect natural resources, topography, and drainage. Streets shall be adjusted to the contours of the land so as to produce useable lots and streets with reasonable gradients (slopes).
  • Grading and Improvement Plan. Drawings and specifications for street grading and improvements shall be designed in accordance with Parish standards and approved by the Director of Public Works. All street grading and improvements shall be constructed in accordance with the drawings and specifications approved in the engineering approval phase, as specified in Section 5.5.4, Engineering Approval.

    • Effective on: 2/4/2014

    Sec. 3.6.2 Street Standards

  • Access.
    1. Subdivisions with 30 or more lots, or multiple-family developments with 50 or more dwelling units, shall have at least two access points to/from existing roadways. Those access points shall be located as far apart as practical and consistent with Section 3.6.11, Access Management and Circulation.
    2. The street layout of a subdivision shall provide access to all building sites and parcels.
    3. Street alignment within the subdivision shall utilize curves, islands, intersections, and / or other methods that allow adequate access but discourage speeding.
  • Offsite Connectivity.
    1. Wherever streets have been dedicated or platted on the adjacent properties for extension into or through the proposed subdivision, then those streets shall be incorporated into the street layout of the proposed subdivision.
    2. Subdivision streets shall be extended to the boundaries of the parcel proposed for development in appropriate locations to provide for future connections to other properties.
  • Right-of-Way and Pavement Widths.
    1. Generally, widths of rights-of-way shall conform to the widths specified in Table 3.6.2A, Geometric and Design Standards for Streets. However, where the major street plan adopted by the Parish provides a different width of right-of-way for a particular street, the major street plan shall control.
    2. Where additional right-of-way is needed to obtain vertical curve, grade, clear sight triangles, turn lanes, or medians, the required right-of-way shall be adjusted to the extent necessary in accordance with local needs as determined by the Director of Public Works.
    • Table 3.6.2A
    Geometric and Design Standards for Streets
    Improvement Requirements1 Street Classification
    Local Streets (feet) Collector Street (feet)Secondary Arterial (feet)Primary Arterial (feet)
    Minimum Right-Of-Way Widths
    Minimum right-of-way width for streets with shoulders and roadside ditch drainage 50 60 70 100
    Minimum right-of-way width for streets with curbs, gutters and subsurface drainage 50 50 60 75
    Center Line Curvature
    Maximum degree of horizontal center line curvature (with superelevation)(degree) N/A 21o 00' 11o 30' 11o 30'
    Maximum degree of horizontal center line curvature (without superelevation)(degree) 41o 00' 17o 30' 9o 00' 9o 00'
    Minimum length of tangent between points of reverse horizontal center line curvature N/A 100 200 300
    Stopping Sight Distance
    Minimum stopping sight distance 150 200 275 300
    Minimum Width of Borders
    Minimum width of border area between edge of traffic lane to edge of right-of-way for noncurbed streets 18 20 22 24
    Minimum width of border area between edge of traffic lane to edge of right-of-way for curbed streets 10 10 12 12
    Cul-de-sacs / Dead-End Streets
    Maximum length of permanent cul-de-sacs 600 600 N/A N/A
    Maximum length of temporary cul-de-sacs 450 450 1,000 1,000
    Minimum right-of-way radius of cul-de-sac for noncurbed streets 50 60 N/A N/A
    Minimum right-of-way radius for cul-de-sac for curbed streets 50 60 N/A N/A
    Minimum Design Speeds
    Minimum design speed (miles per hour) 25 25 40 50
    Traffic Lanes
    Minimum number of traffic lanes 2 2 2 4
    Minimum clear width of traffic lanes for streets without curbs 12 12 12 12
    Minimum clear width of traffic lanes for streets with curbs 12.5 12.5 12 12
    Minimum clearance from outside edge of travel lane to inside face of curb, without parking lane N/A N/A 3.0 (2 lanes)
    1.5 (4 lanes)    		 1.5 (4 lanes)
    Pavement Radius
    Minimum pavement radius at intersections for streets without curbs 30 35 50 50
    Minimum pavement radius at intersections for streets with curbs 18 25 30 35
    Minimum outside radius of street pavement at cul-de-sacs 50 50 N/A N/A
    Maximum inside radius of street pavement at cul-de-sacs 26 26 N/A N/A
    "T" Turnarounds
    Minimum length of "T" turnaround 60 80 N/A N/A
    Minimum Lane Widths
    Minimum width of parking lane where used 8 8 10 10
    Minimum width of median for four-lane streets when used N/A 24 32 32
    Shoulders and Curbs
    Minimum type of shoulders (open ditch drainage) Compacted aggregate Compacted aggregate Stabilized and surfaced Stabilized and surfaced
    Minimum outside shoulder width (open ditch drainage) 4 6 8 10
    Outside curb requirements for curbed streets at intersections Mountable or barrier Mountable or barrier Barrier only Barrier only
    Median curb requirements N/A Barrier Barrier Barrier
    Sidewalks
    Minimum width of sidewalks where used 4 4 5 6
    Average Daily Traffic (ADT)
    Minimum design average daily traffic (ADT) for residential streets (vehicles per day) 375 750 1,500 3,000
    Minimum design average daily traffic (ADT) for business and industrial streets (vehicles per day) 750 750 1,500 3,000
    Minimum Design Loads
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for residential streets (percent) 6% 8% 10% 10%
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for business ad industrial streets (percent) 10% 10% 10% 10%
    Minimum Thickness
    Minimum thickness of Portland cement concrete pavement for residential streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (i inches) 6 6 8 8
    Minimum thickness of Portland cement concrete pavement for business and industrial streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (in inches) 8 8 8 8
    Minimum thickness of asphaltic concrete pavement for residential streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 3.5 4 6 6
    Minimum thickness of asphaltic concrete pavement for business and industrial streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 5 5 6 6
    Other
    Pavement transverse cross-slope (percent) 2.5 2.5 2.5 2.5
    Maximum longitudinal grade (percent) 10 8 6 5
    Maximum longitudinal gutter grade for streets with curbs, gutters and subsurface drainage (percent) 0.24 0.30 0.35 0.35
    Minimum vertical clearance (feet) 15 15 15 16
    Bridge design load HS 20-44 HS 20-44 HS 20-44 HS 20-44
    Minimum roadside ditch foreslope and backslope ratio 2:1 3:1 3:1 4:1
    Minimum embankment fill slope ratio 3:1 3:1 4:1 4:1
    Maximum difference in center line grade across intersections and cross-overs (percent) 7 7 7 7
    Design storm minimum frequency (in years) 5 5 10 25
    Notes:
    1 Numbers are expressed in feet unless otherwise noted.
    Table 3.6.2A
    Geometric and Design Standards for Streets
    Improvement Requirements1 Street Classification
    Local Streets (feet) Collector Street (feet)Secondary Arterial (feet)Primary Arterial (feet)
    Minimum Right-Of-Way Widths
    Minimum right-of-way width for streets with shoulders and roadside ditch drainage 50 60 70 100
    Minimum right-of-way width for streets with curbs, gutters and subsurface drainage 50 50 60 75
    Center Line Curvature
    Maximum degree of horizontal center line curvature (with superelevation)(degree) N/A 21o 00' 11o 30' 11o 30'
    Maximum degree of horizontal center line curvature (without superelevation)(degree) 41o 00' 17o 30' 9o 00' 9o 00'
    Minimum length of tangent between points of reverse horizontal center line curvature N/A 100 200 300
    Stopping Sight Distance
    Minimum stopping sight distance 150 200 275 300
    Minimum Width of Borders
    Minimum width of border area between edge of traffic lane to edge of right-of-way for noncurbed streets 18 20 22 24
    Minimum width of border area between edge of traffic lane to edge of right-of-way for curbed streets 10 10 12 12
    Cul-de-sacs / Dead-End Streets
    Maximum length of permanent cul-de-sacs 600 600 N/A N/A
    Maximum length of temporary cul-de-sacs 450 450 1,000 1,000
    Minimum right-of-way radius of cul-de-sac for noncurbed streets 50 60 N/A N/A
    Minimum right-of-way radius for cul-de-sac for curbed streets 50 60 N/A N/A
    Minimum Design Speeds
    Minimum design speed (miles per hour) 25 25 40 50
    Traffic Lanes
    Minimum number of traffic lanes 2 2 2 4
    Minimum clear width of traffic lanes for streets without curbs 12 12 12 12
    Minimum clear width of traffic lanes for streets with curbs 12.5 12.5 12 12
    Minimum clearance from outside edge of travel lane to inside face of curb, without parking lane N/A N/A 3.0 (2 lanes)
    1.5 (4 lanes)    		 1.5 (4 lanes)
    Pavement Radius
    Minimum pavement radius at intersections for streets without curbs 30 35 50 50
    Minimum pavement radius at intersections for streets with curbs 18 25 30 35
    Minimum outside radius of street pavement at cul-de-sacs 50 50 N/A N/A
    Maximum inside radius of street pavement at cul-de-sacs 26 26 N/A N/A
    "T" Turnarounds
    Minimum length of "T" turnaround 60 80 N/A N/A
    Minimum Lane Widths
    Minimum width of parking lane where used 8 8 10 10
    Minimum width of median for four-lane streets when used N/A 24 32 32
    Shoulders and Curbs
    Minimum type of shoulders (open ditch drainage) Compacted aggregate Compacted aggregate Stabilized and surfaced Stabilized and surfaced
    Minimum outside shoulder width (open ditch drainage) 4 6 8 10
    Outside curb requirements for curbed streets at intersections Mountable or barrier Mountable or barrier Barrier only Barrier only
    Median curb requirements N/A Barrier Barrier Barrier
    Sidewalks
    Minimum width of sidewalks where used 4 4 5 6
    Average Daily Traffic (ADT)
    Minimum design average daily traffic (ADT) for residential streets (vehicles per day) 375 750 1,500 3,000
    Minimum design average daily traffic (ADT) for business and industrial streets (vehicles per day) 750 750 1,500 3,000
    Minimum Design Loads
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for residential streets (percent) 6% 8% 10% 10%
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for business ad industrial streets (percent) 10% 10% 10% 10%
    Minimum Thickness
    Minimum thickness of Portland cement concrete pavement for residential streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (i inches) 6 6 8 8
    Minimum thickness of Portland cement concrete pavement for business and industrial streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (in inches) 8 8 8 8
    Minimum thickness of asphaltic concrete pavement for residential streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 3.5 4 6 6
    Minimum thickness of asphaltic concrete pavement for business and industrial streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 5 5 6 6
    Other
    Pavement transverse cross-slope (percent) 2.5 2.5 2.5 2.5
    Maximum longitudinal grade (percent) 10 8 6 5
    Maximum longitudinal gutter grade for streets with curbs, gutters and subsurface drainage (percent) 0.24 0.30 0.35 0.35
    Minimum vertical clearance (feet) 15 15 15 16
    Bridge design load HS 20-44 HS 20-44 HS 20-44 HS 20-44
    Minimum roadside ditch foreslope and backslope ratio 2:1 3:1 3:1 4:1
    Minimum embankment fill slope ratio 3:1 3:1 4:1 4:1
    Maximum difference in center line grade across intersections and cross-overs (percent) 7 7 7 7
    Design storm minimum frequency (in years) 5 5 10 25
    Notes:
    1 Numbers are expressed in feet unless otherwise noted.
    Table 3.6.2A
    Geometric and Design Standards for Streets
    Improvement Requirements1 Street Classification
    Local Streets (feet) Collector Street (feet)Secondary Arterial (feet)Primary Arterial (feet)
    Minimum Right-Of-Way Widths
    Minimum right-of-way width for streets with shoulders and roadside ditch drainage 50 60 70 100
    Minimum right-of-way width for streets with curbs, gutters and subsurface drainage 50 50 60 75
    Center Line Curvature
    Maximum degree of horizontal center line curvature (with superelevation)(degree) N/A 21o 00' 11o 30' 11o 30'
    Maximum degree of horizontal center line curvature (without superelevation)(degree) 41o 00' 17o 30' 9o 00' 9o 00'
    Minimum length of tangent between points of reverse horizontal center line curvature N/A 100 200 300
    Stopping Sight Distance
    Minimum stopping sight distance 150 200 275 300
    Minimum Width of Borders
    Minimum width of border area between edge of traffic lane to edge of right-of-way for noncurbed streets 18 20 22 24
    Minimum width of border area between edge of traffic lane to edge of right-of-way for curbed streets 10 10 12 12
    Cul-de-sacs / Dead-End Streets
    Maximum length of permanent cul-de-sacs 600 600 N/A N/A
    Maximum length of temporary cul-de-sacs 450 450 1,000 1,000
    Minimum right-of-way radius of cul-de-sac for noncurbed streets 50 60 N/A N/A
    Minimum right-of-way radius for cul-de-sac for curbed streets 50 60 N/A N/A
    Minimum Design Speeds
    Minimum design speed (miles per hour) 25 25 40 50
    Traffic Lanes
    Minimum number of traffic lanes 2 2 2 4
    Minimum clear width of traffic lanes for streets without curbs 12 12 12 12
    Minimum clear width of traffic lanes for streets with curbs 12.5 12.5 12 12
    Minimum clearance from outside edge of travel lane to inside face of curb, without parking lane N/A N/A 3.0 (2 lanes)
    1.5 (4 lanes)    		 1.5 (4 lanes)
    Pavement Radius
    Minimum pavement radius at intersections for streets without curbs 30 35 50 50
    Minimum pavement radius at intersections for streets with curbs 18 25 30 35
    Minimum outside radius of street pavement at cul-de-sacs 50 50 N/A N/A
    Maximum inside radius of street pavement at cul-de-sacs 26 26 N/A N/A
    "T" Turnarounds
    Minimum length of "T" turnaround 60 80 N/A N/A
    Minimum Lane Widths
    Minimum width of parking lane where used 8 8 10 10
    Minimum width of median for four-lane streets when used N/A 24 32 32
    Shoulders and Curbs
    Minimum type of shoulders (open ditch drainage) Compacted aggregate Compacted aggregate Stabilized and surfaced Stabilized and surfaced
    Minimum outside shoulder width (open ditch drainage) 4 6 8 10
    Outside curb requirements for curbed streets at intersections Mountable or barrier Mountable or barrier Barrier only Barrier only
    Median curb requirements N/A Barrier Barrier Barrier
    Sidewalks
    Minimum width of sidewalks where used 4 4 5 6
    Average Daily Traffic (ADT)
    Minimum design average daily traffic (ADT) for residential streets (vehicles per day) 375 750 1,500 3,000
    Minimum design average daily traffic (ADT) for business and industrial streets (vehicles per day) 750 750 1,500 3,000
    Minimum Design Loads
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for residential streets (percent) 6% 8% 10% 10%
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for business ad industrial streets (percent) 10% 10% 10% 10%
    Minimum Thickness
    Minimum thickness of Portland cement concrete pavement for residential streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (i inches) 6 6 8 8
    Minimum thickness of Portland cement concrete pavement for business and industrial streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (in inches) 8 8 8 8
    Minimum thickness of asphaltic concrete pavement for residential streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 3.5 4 6 6
    Minimum thickness of asphaltic concrete pavement for business and industrial streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 5 5 6 6
    Other
    Pavement transverse cross-slope (percent) 2.5 2.5 2.5 2.5
    Maximum longitudinal grade (percent) 10 8 6 5
    Maximum longitudinal gutter grade for streets with curbs, gutters and subsurface drainage (percent) 0.24 0.30 0.35 0.35
    Minimum vertical clearance (feet) 15 15 15 16
    Bridge design load HS 20-44 HS 20-44 HS 20-44 HS 20-44
    Minimum roadside ditch foreslope and backslope ratio 2:1 3:1 3:1 4:1
    Minimum embankment fill slope ratio 3:1 3:1 4:1 4:1
    Maximum difference in center line grade across intersections and cross-overs (percent) 7 7 7 7
    Design storm minimum frequency (in years) 5 5 10 25
    Notes:
    1 Numbers are expressed in feet unless otherwise noted.
    Table 3.6.2A
    Geometric and Design Standards for Streets
    Improvement Requirements1 Street Classification
    Local Streets (feet) Collector Street (feet)Secondary Arterial (feet)Primary Arterial (feet)
    Minimum Right-Of-Way Widths
    Minimum right-of-way width for streets with shoulders and roadside ditch drainage 50 60 70 100
    Minimum right-of-way width for streets with curbs, gutters and subsurface drainage 50 50 60 75
    Center Line Curvature
    Maximum degree of horizontal center line curvature (with superelevation)(degree) N/A 21o 00' 11o 30' 11o 30'
    Maximum degree of horizontal center line curvature (without superelevation)(degree) 41o 00' 17o 30' 9o 00' 9o 00'
    Minimum length of tangent between points of reverse horizontal center line curvature N/A 100 200 300
    Stopping Sight Distance
    Minimum stopping sight distance 150 200 275 300
    Minimum Width of Borders
    Minimum width of border area between edge of traffic lane to edge of right-of-way for noncurbed streets 18 20 22 24
    Minimum width of border area between edge of traffic lane to edge of right-of-way for curbed streets 10 10 12 12
    Cul-de-sacs / Dead-End Streets
    Maximum length of permanent cul-de-sacs 600 600 N/A N/A
    Maximum length of temporary cul-de-sacs 450 450 1,000 1,000
    Minimum right-of-way radius of cul-de-sac for noncurbed streets 50 60 N/A N/A
    Minimum right-of-way radius for cul-de-sac for curbed streets 50 60 N/A N/A
    Minimum Design Speeds
    Minimum design speed (miles per hour) 25 25 40 50
    Traffic Lanes
    Minimum number of traffic lanes 2 2 2 4
    Minimum clear width of traffic lanes for streets without curbs 12 12 12 12
    Minimum clear width of traffic lanes for streets with curbs 12.5 12.5 12 12
    Minimum clearance from outside edge of travel lane to inside face of curb, without parking lane N/A N/A 3.0 (2 lanes)
    1.5 (4 lanes)    		 1.5 (4 lanes)
    Pavement Radius
    Minimum pavement radius at intersections for streets without curbs 30 35 50 50
    Minimum pavement radius at intersections for streets with curbs 18 25 30 35
    Minimum outside radius of street pavement at cul-de-sacs 50 50 N/A N/A
    Maximum inside radius of street pavement at cul-de-sacs 26 26 N/A N/A
    "T" Turnarounds
    Minimum length of "T" turnaround 60 80 N/A N/A
    Minimum Lane Widths
    Minimum width of parking lane where used 8 8 10 10
    Minimum width of median for four-lane streets when used N/A 24 32 32
    Shoulders and Curbs
    Minimum type of shoulders (open ditch drainage) Compacted aggregate Compacted aggregate Stabilized and surfaced Stabilized and surfaced
    Minimum outside shoulder width (open ditch drainage) 4 6 8 10
    Outside curb requirements for curbed streets at intersections Mountable or barrier Mountable or barrier Barrier only Barrier only
    Median curb requirements N/A Barrier Barrier Barrier
    Sidewalks
    Minimum width of sidewalks where used 4 4 5 6
    Average Daily Traffic (ADT)
    Minimum design average daily traffic (ADT) for residential streets (vehicles per day) 375 750 1,500 3,000
    Minimum design average daily traffic (ADT) for business and industrial streets (vehicles per day) 750 750 1,500 3,000
    Minimum Design Loads
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for residential streets (percent) 6% 8% 10% 10%
    Minimum design 18,000 lb. single-axle loading repetitions expressed as a percentage of ADT for business ad industrial streets (percent) 10% 10% 10% 10%
    Minimum Thickness
    Minimum thickness of Portland cement concrete pavement for residential streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (i inches) 6 6 8 8
    Minimum thickness of Portland cement concrete pavement for business and industrial streets (min. unconfined compressive strength 4,000 psi at 28—31 days) (in inches) 8 8 8 8
    Minimum thickness of asphaltic concrete pavement for residential streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 3.5 4 6 6
    Minimum thickness of asphaltic concrete pavement for business and industrial streets (min. 1,200 lbs. Marshall Stability and compacted to within 95% of laboratory density) (in inches) 5 5 6 6
    Other
    Pavement transverse cross-slope (percent) 2.5 2.5 2.5 2.5
    Maximum longitudinal grade (percent) 10 8 6 5
    Maximum longitudinal gutter grade for streets with curbs, gutters and subsurface drainage (percent) 0.24 0.30 0.35 0.35
    Minimum vertical clearance (feet) 15 15 15 16
    Bridge design load HS 20-44 HS 20-44 HS 20-44 HS 20-44
    Minimum roadside ditch foreslope and backslope ratio 2:1 3:1 3:1 4:1
    Minimum embankment fill slope ratio 3:1 3:1 4:1 4:1
    Maximum difference in center line grade across intersections and cross-overs (percent) 7 7 7 7
    Design storm minimum frequency (in years) 5 5 10 25
    Notes:
    1 Numbers are expressed in feet unless otherwise noted.
    1. New Perimeter Streets. Street systems in a new subdivision shall be laid out so as to eliminate or avoid new perimeter half-streets. Where an existing half-street is adjacent to a new subdivision, the other half of the street shall be improved and dedicated by the subdivider. The Director may authorize a new perimeter street where the subdivider improves and dedicates the entire required street right-of-way width within his own subdivision.
    2. Widening and Realignment of Streets. When a proposed subdivision is to be located on an existing thoroughfare having a street width less than provided for in this UDC, the subdivider shall provide enough additional street so that the distance from the center line of the existing thoroughfare to the property line of the proposed subdivision will not be less than one-half of the street width provided for in this UDC.
    3. TND Street Configurations.
      1. Streets within TNDs shall be designed according to Table 3.6.2B, TND Street Configurations.
      2. In order to promote a pedestrian-friendly environment, curb radii may be reduced as specified by the applicant, provided that:
        1. The School District approves a bus route that has curb radii that are acceptable to the School District for the safe operation of its buses.
        2. The Fire Department approves the curb radii or emergency (flattened or mountable) curb treatment.
        3. The trash removal service provider approves the curb radii.
    Table 3.6.2B
    TND Street Configurations
    ClassificationTypeMin. Right-of-Way Max. ADTMin. Travel Lanes Min. Vehicle Travel Lane WidthMin. Clear Sidewalk WidthOn-Street Parking
    Collector Primary Boulevard 110 ft. - 4 12 ft. 10 ft. Not allowed
    Collector Boulevard 72 ft. - 2 12 ft. 8 ft. Allowed
    Local Main Street Mixed-Use 67 ft. - 2 10 ft. 10 ft. Allowed
    Local Green Streets 58 ft. 1,000 2 9 ft. 5 ft. Allowed
    Local Main Street Residential 57 ft. - 2 10 ft. 5 ft. Allowed
    Local Small Streets 47 ft. - 2 8 ft. in G or E subdistricts; 9 ft. in C 5 ft. Allowed
    Local Small streets that abut parks or plazas 43 ft. 2,500 2 10 ft. 8 ft. (one side) Allowed
    Local Small streets that abut parks or plazas 37 ft. 1,000 2 9 ft. 5 ft. (one side) Allowed
    Local One-way streets that abut parks or plazas 32 ft. 1,000 1 10 ft. 6 ft. (one side) Allowed
    Alley Alley 20 ft. - 1 10 ft. None Not allowed
    Table 3.6.2B
    TND Street Configurations
    ClassificationTypeMin. Right-of-Way Max. ADTMin. Travel Lanes Min. Vehicle Travel Lane WidthMin. Clear Sidewalk WidthOn-Street Parking
    Collector Primary Boulevard 110 ft. - 4 12 ft. 10 ft. Not allowed
    Collector Boulevard 72 ft. - 2 12 ft. 8 ft. Allowed
    Local Main Street Mixed-Use 67 ft. - 2 10 ft. 10 ft. Allowed
    Local Green Streets 58 ft. 1,000 2 9 ft. 5 ft. Allowed
    Local Main Street Residential 57 ft. - 2 10 ft. 5 ft. Allowed
    Local Small Streets 47 ft. - 2 8 ft. in G or E subdistricts; 9 ft. in C 5 ft. Allowed
    Local Small streets that abut parks or plazas 43 ft. 2,500 2 10 ft. 8 ft. (one side) Allowed
    Local Small streets that abut parks or plazas 37 ft. 1,000 2 9 ft. 5 ft. (one side) Allowed
    Local One-way streets that abut parks or plazas 32 ft. 1,000 1 10 ft. 6 ft. (one side) Allowed
    Alley Alley 20 ft. - 1 10 ft. None Not allowed
    Table 3.6.2B
    TND Street Configurations
    ClassificationTypeMin. Right-of-Way Max. ADTMin. Travel Lanes Min. Vehicle Travel Lane WidthMin. Clear Sidewalk WidthOn-Street Parking
    Collector Primary Boulevard 110 ft. - 4 12 ft. 10 ft. Not allowed
    Collector Boulevard 72 ft. - 2 12 ft. 8 ft. Allowed
    Local Main Street Mixed-Use 67 ft. - 2 10 ft. 10 ft. Allowed
    Local Green Streets 58 ft. 1,000 2 9 ft. 5 ft. Allowed
    Local Main Street Residential 57 ft. - 2 10 ft. 5 ft. Allowed
    Local Small Streets 47 ft. - 2 8 ft. in G or E subdistricts; 9 ft. in C 5 ft. Allowed
    Local Small streets that abut parks or plazas 43 ft. 2,500 2 10 ft. 8 ft. (one side) Allowed
    Local Small streets that abut parks or plazas 37 ft. 1,000 2 9 ft. 5 ft. (one side) Allowed
    Local One-way streets that abut parks or plazas 32 ft. 1,000 1 10 ft. 6 ft. (one side) Allowed
    Alley Alley 20 ft. - 1 10 ft. None Not allowed
    Table 3.6.2B
    TND Street Configurations
    ClassificationTypeMin. Right-of-Way Max. ADTMin. Travel Lanes Min. Vehicle Travel Lane WidthMin. Clear Sidewalk WidthOn-Street Parking
    Collector Primary Boulevard 110 ft. - 4 12 ft. 10 ft. Not allowed
    Collector Boulevard 72 ft. - 2 12 ft. 8 ft. Allowed
    Local Main Street Mixed-Use 67 ft. - 2 10 ft. 10 ft. Allowed
    Local Green Streets 58 ft. 1,000 2 9 ft. 5 ft. Allowed
    Local Main Street Residential 57 ft. - 2 10 ft. 5 ft. Allowed
    Local Small Streets 47 ft. - 2 8 ft. in G or E subdistricts; 9 ft. in C 5 ft. Allowed
    Local Small streets that abut parks or plazas 43 ft. 2,500 2 10 ft. 8 ft. (one side) Allowed
    Local Small streets that abut parks or plazas 37 ft. 1,000 2 9 ft. 5 ft. (one side) Allowed
    Local One-way streets that abut parks or plazas 32 ft. 1,000 1 10 ft. 6 ft. (one side) Allowed
    Alley Alley 20 ft. - 1 10 ft. None Not allowed

    Effective on: 3/12/2014

    Sec. 3.6.3 Dead-end Streets/Cul-de-sacs

  • Temporary Dead-end Streets. The arrangement of streets shall provide for the continuation of principal streets between adjacent properties when such continuation is necessary for convenient movement of traffic, effective provision of utilities, and where such continuation is in accordance with the Parish Thoroughfare Plan. If the adjacent property is undeveloped and the street must be a dead-end street temporarily, the right-of-way shall be extended to the property line. A temporary "T," "L" or cul-de-sac turnaround shall be provided on all temporary dead-end streets, with the notation on the subdivision plat that land outside the normal street right-of-way shall revert to abuttors whenever the street is continued. The Director may limit the length of temporary dead-end streets in accordance with the design standards of this UDC and may require the installation of barricades at the end of any dead-end street.
  • Permanent Dead-end Streets. Where a street does not extend to the boundary of the subdivision and its continuation is not required by Director for access to adjoining property, its terminus shall normally not be nearer to such boundary than 50 feet. However, the Director may require the reservation of an appropriate servitude to accommodate drainage facilities, pedestrian traffic, or utilities. A cul-de-sac, "T," or "L" shaped turnaround shall be provided at the end of a permanent dead-end street in accordance with Parish design and construction standards. For greater convenience of traffic and more effective police and fire protection, permanent dead-end streets shall be limited in length in accordance with the design standards of this UDC.

    • Effective on: 11/1/2013

    Sec. 3.6.4 Intersections

  • Generally. Street intersections shall be designed according to the standards of this Section and other applicable sections of this Division and UDC.
  • Angle of Intersection. Streets shall be laid out so as to intersect as nearly as possible at right angles. A proposed oblique intersection of two new streets at an acute angle of less than 75 degrees shall not be acceptable. An oblique intersecting street should be curved prior to approaching an intersection and should be approximately at right angles for at least 50 feet therefrom. Not more than two streets shall intersect at any one point unless specifically approved by the Director.
  • Spacing of Intersections.
    1. Opposite Side of the Street. Proposed new intersections along one side of an existing street shall, wherever practicable, coincide with any existing intersection on the opposite side of such street. Street jogs with center line offsets of less than 150 feet shall not be permitted, except where the intersected street is four lanes with a dividing median without median breaks at either intersection. Where streets intersect major roads, their alignment shall be continuous. See Figure 3.6.4A, Spacing on Opposite Sides of the Street.
    • Figure 3.6.4A
    Spacing on Opposite Sides of the Street
    Illustrative Intersection Spacing on Opposite Sides of the Street
      1. Same Side of the Street. Streets that intersect on the same side of another street shall be separated by at least 300 feet from centerline to centerline. See Figure 3.6.4B, Spacing on Same Side of the Street.
    Figure 3.6.4B
    Spacing on Same Side of the Street
    Illustrative Intersection Spacing on the Same Side of the Street
    1. Minimum Curb Radius.
      1. Minimum curb radius or roadway edge radius at the intersection of two streets shall be as shown in Table 3.6.2, Geometric and Design Standards for Streets of this Division.
      2. The minimum radius at an intersection involving a state or federal highway shall be as per the requirements of the highway department.
    2. Alley Intersections. Alley intersections and abrupt changes in alignment within a block shall have the corners cut off in accordance with the standards in Section 3.6.5, Alleys, to permit safe vehicular movement.
    3. Grades. Intersections and cross-overs shall be designed with a flat grade wherever practical. The maximum difference in center line grade across intersections and cross-overs shall not exceed the limits outlined in Table 3.6.2, Geometric and Design Standards for Streets.
    4. Earth Banks. Where any street intersection will involve earth banks or existing vegetation inside any lot corner that could create a traffic hazard by limiting visibility, such ground and/or vegetation (including trees) shall be cut in connection with the grading of the public street to the extent deemed necessary to provide an adequate sight distance.
    5. Transverse Cross Slope. The transverse cross slope on all streets shall be as shown on Table 3.6.2, Geometric and Design Standards for Streets of this Division.

    Effective on: 2/4/2014

    Sec. 3.6.5 Alleys

  • Generally. Alleys may be provided for primary or secondary vehicular access to lots and uses. Alleys may not provide any access to property outside of the parcel proposed for development in which the alleys are dedicated.
  • Ownership and Maintenance of Alleys. Alleys shall be owned and maintained by a property owners' association. Covenants, conditions, and restrictions ("CCRs") shall be recorded with the approved final plat for all subdivisions that include alleys. The CCRs shall include the following, which shall be in a form acceptable to the Parish Attorney, and which shall be enforceable by the Parish:
    1. A mandatory property owners' association with lien rights to collect dues from lot or unit owners;
    2. A perpetual obligation of the property owners' association to maintain the private streets and drainage systems;
    3. Ownership of the alleys by a single entity, such as a property owners' association, rather than under lot owners (or other owners);
    4. Cross-access servitudes for all lot owners;
    5. Servitudes for access by:
      1. Emergency vehicles; and
      2. Garbage and trash collection (if designed for garbage and trash collection); and
    6. Servitudes for public utilities.
  • Minimum Widths. The following minimum widths shall apply to alleys:
    1. Minimum Right-of-Way Width: 20 feet
    2. Minimum Cartway Width: 10 feet
  • Alley Length. Alleys shall be the same length as the blocks that provide frontage to the lots that the alleys serve, with minor variation permitted to account for curvature of intersecting streets.
  • Alley Intersections and Curves.
    1. Alleys should intersect streets at right angles. The intersection of a street and an alley should be constructed as a standard approach.
    2. A minimum curb radius of 30 feet to the inside edge of the alley paving shall be provided at intersections between alleys, and the additional area shall be platted as part of the alley.
  • Alley Turnouts. Alley turnouts shall meet the following minimum standards:
    1. Minimum width of pavement at intersection: 18 feet
    2. Turnouts shall be paved to the property line.
    3. No gate, building, or garage opening shall be located closer than 20 feet to an alley turnout, measured from the closest edges of pavement along the alley and along the intersecting street right-of-way.
  • Dead-Ends Prohibited. Dead-end or cul-de-sac alleys shall be avoided unless:
    1. Natural resources, such as floodplains, wetlands, or open water prevent their connection to a local street and there is no alternative design that would serve all of the lots with alley access; or
    2. In a TND, the dead-end or cul-de-sac is necessary to improve the street layout.

    • Effective on: 11/1/2013

    Sec. 3.6.6 Site Distance Requirements

  • Street Intersections. No fence, wall, hedge, or shrub planting which obstructs sight lines shall be placed or permitted to remain on any corner lot in the areas specified by this subsection. See Figure 3.6.6, Sight Distance Requirements for Street Intersections.
    • Figure 3.6.6
    Sight Distance Requirements for Street Intersections

    Distance A and Distance B are measured from the point of intersection of the street lot lines (if private lots are squared off) or the extension of the street lot lines (if private lots are rounded off), away from the intersection along the street lot lines.
      1. At the intersection of a collector street and local street, Distance A and Distance B (See Figure 3.6.6, Sight Distance Requirements for Street Intersections) shall each be at least 25 feet.
      2. At the intersection of two local streets or the intersection of a street and an alley, Distance A and Distance B (See Figure 3.6.6, Sight Distance Requirements for Street Intersections) shall each be at least 15 feet.
    1. Exceptions.
      1. Shade trees are permitted to overhang the specified triangles, provided that all branches are not less than eight feet above the street level.
      2. No portion of a fence or wall exceeding 2.5 feet in height above the finished lot grade shall exceed 25 percent opacity when located in a required yard that either:
        1. Has vehicular access to a street; or
        2. Abuts such access.
    2. Trees or Utility Poles Within the Right-of-Way. Neither trees nor utility poles (except street lights and traffic signal supports) shall be placed within the public right-of-way within 50 feet of the intersecting centerlines at street intersections. Trees which existed in such locations as of the effective date of this UDC shall be pruned to clear the area between two feet and six feet above the ground level if such pruning can be accomplished without compromising the health or structural integrity of the tree.

    Effective on: 11/1/2013

    Sec. 3.6.7 Private Streets

  • Generally. Private roads and streets are permitted only as provided in this Section.
  • Residential Subdivisions. Private streets are permitted in residential subdivisions if the Director of Public Works determines, because of unique operation or maintenance issues, that private maintenance and operation of the road or street is in the best interest of the Parish.
  • Nonresidential and Multiple-Family Subdivisions. The private road or street runs through, to, or between parking areas in commercial, industrial, or multiple-family developments, where:
    1. All property accessed by the street is under single ownership;
    2. There is sufficient alternative access to abutting properties;
    3. The access to the parcel proposed for subdivision and the abutting properties meets the spacing requirements of Section 3.6.11, Access Management and Circulation; and
    4. The Parish Council finds that connecting the street to the public street network is not desirable because it would increase through traffic in an established or proposed neighborhood.
  • Requirements for Private Streets. If and when private streets are permitted, they shall meet all of the following requirements:
    1. Private streets shall be laid out, designed, and constructed in the same manner as public streets;
    2. The final plat shall be annotated with a notice that the streets are private and subject to a covenant for maintenance;
    3. Street name signs shall indicate that the streets are private;
    4. The private streets will not interfere with the implementation of the Parish's Thoroughfare Plan, Capital Improvements Plan, or plans for construction or expansion of state or federal highways; and
    5. The private streets will not materially interfere with street connectivity in the Parish or create an unreasonable impact on an adjacent public street by curtailing opportunities for alternative travel routes.
  • Gates. Gates are permitted at entries to private street subdivisions, provided that they comply with the standards of this subsection..
    1. Gates shall be set back from the public street to allow for stacking, as follows:
      1. 2 to 30 dwelling units: 20 feet;
      2. 31 or more dwelling units: 40 feet.
    2. Two inbound gates shall be provided, one for residents and one for guests, for all subdivisions that include more than 60 dwelling units. The paved area behind the guest gate shall be sufficient to accommodate at least one vehicle without interfering with the use of the resident gate.
    3. A means of prompt access shall be provided to police, fire, and emergency medical transport service providers.
  • Covenants, Conditions, and Restrictions. Covenants, conditions, and restrictions ("CCRs") shall be recorded for all private street subdivisions with the approved final plat. The CCRs shall include the following, which shall be in a form acceptable to the Parish Attorney, and which shall be enforceable by the Parish:
    1. A mandatory property owners' association with lien rights to collect dues from lot or unit owners;
    2. A perpetual obligation of the property owners' association to maintain the private streets and drainage systems;
    3. Ownership of the private streets by a single entity, such as a property owners' association, rather than under lot owners (or other owners);
    4. A perpetual obligation to enforce restrictions against on-street parking, unless the street is designed for on-street parking;
    5. Cross-access servitudes for all lot owners;
    6. Servitudes for access by:
      1. School buses;
      2. Emergency vehicles; and
      3. Garbage and trash collection; and
    7. Servitudes for public utilities.
  • Conversion to Public Streets.
    1. Private roads or streets shall not be converted to public streets unless:
      1. The rights-of-way comply with the dimensional standards of the UDC or approval by the Director of Public Works;
      2. The roads or streets are hard surfaced according to Parish standards for public roads and streets; and
      3. The streets and associated drainage are in good repair.
    2. If private streets do not comply with subsection G.1., above, then the Parish may allow conversion to public streets if:
      1. All of the property owners with frontage on the street consent in writing to the conversion; and
      2. All of the property owners with frontage on the street consent to a special assessment to cover the cost of improving the roads or streets to the standards of subsection G.1., above.

    • Effective on: 11/1/2013

    Sec. 3.6.8 Street Surfacing and Improvement

  • Generally. After underground utilities have been installed, the street improvements shall be constructed which shall include shoulders and roadside drainage ditches, or curbs, gutters and subsurface drainage; all proposed street improvements, including cul-de-sacs, sidewalks, bridges, etc., shall be constructed using the latest version of the design and construction standards of the Parish Department of Public Works.
  • Horizontal and Vertical Alignment. Horizontal and vertical alignment for streets and intersections shall conform to the minimum requirements set forth in Table 3.6.2A, Geometric and Design Standards for Streets, and shall be designed in conformance with the applicable requirements set forth within the design guidelines entitled, "A policy on Geometric Design of Rural Highways" and "A Policy on Design of Urban Highways and Arterial Streets," latest editions, as prepared by the American Association of State Highway and Transportation Officials.
  • Changes in Grade. All changes of grade shall be connected by vertical curves of a minimum length in feet equal to 20 times the algebraic difference in the rate of grade for arterials and industrial streets; for collector and local streets, 15 times.
  • Pavement Specifications.
    1. Pavement Design and Construction. All proposed road and street pavements throughout any subdivision or development shall be designed and constructed in accordance with the minimum traffic load criteria and pavement thickness requirements for roads and streets as set forth within Table 3.6.2A, Geometric and Design Standards for Streets.
    2. Pavement Surface. The pavement surface may consist of either Portland cement concrete pavement or asphaltic concrete pavement in conformance with the minimum surface thickness requirements outlined in Table 3.6.2A, Geometric and Design Standards for Streets.
  • Sub-Soil Investigation and Geotechnical Analysis.
    1. Investigation and Analysis Required. A sub-soils investigation and accompanying geotechnical analysis shall be performed to determine existing sub-soil conditions and accompanying requirement for base course and/or sub-base preparation in order to determine the final lift thickness and composition of the street or roadway structural section to be used.
    2. Submittal. One copy of the geotechnical analysis together with layout maps showing location of all roadway borings shall be provided to the Director of Public Works for review and approval. A typical cross-section showing proposed pavement thickness together with lift thickness and composition of proposed base, sub-base and/or shoulder course materials and applicable compaction requirements shall be submitted for approval in conjunction with analysis.
  • As-Built Report Required. A qualified testing laboratory furnished by the subdivider or developer and approved by the Director of Public Works shall be responsible for all phases of subsequent field and laboratory testing during construction. Following completion of construction, a report from the testing laboratory shall be submitted to the Parish certifying that all construction complies with the requirements set forth within the initial geotechnical analysis and/or any specific and acceptable deviations therefrom.

    • Effective on: 11/1/2013

    Sec. 3.6.9 Street Name and Traffic Control Signs

  • Street Name Signs. The subdivider or developer shall furnish and install street name signs at the intersections of all streets to be constructed throughout the subdivision or development. All signs shall be corrosion-resistant, reflectorized enamel complete with hot-dipped galvanized post and hardware and installed in accordance with the requirements of the Director of Public Works.
  • Traffic Control Signs. The subdivider/developer shall furnish and install all traffic control signs and devices as directed by the Director of Public Works.

    • Effective on: 11/1/2013

    Sec. 3.6.10 Bridges

    Generally. Bridges of primary benefit to the subdivider/developer, as determined by the Director, shall be constructed at the full expense of the subdivider/developer without reimbursement from the Parish. All bridges shall conform to the design and construction standards and specifications as set forth in Table 3.6.2A, Geometric and Design Standards for Streets and by the Director of Public Works. A subsoils investigation and accompanying geotechnical analysis shall be performed to determine load bearing and side-slope stability requirements prior to design and construction.

    Effective on: 11/1/2013

    Sec. 3.6.11 Access Management and Circulation

  • Generally. For the purposes of this Section:
    1. Arterials. Arterials include both primary arterials and secondary arterials, including all arterials identified on the latest version of the Parish's Thoroughfare Plan.
    2. Access Points. Access points include highways, public and private streets, alleys, driveways, and marginal access streets.
  • Access to Single-Family and Duplex Lots.
    1. Existing Lots. Existing access to single-family detached and duplex lots from arterial or collector streets is permitted. However, the existing access shall be moved from the arterial or collector to a local street if:
      1. The lot has access to a local street; and
      2. The principal building is redeveloped (or a new principal building is constructed).
    2. New Lots. New single-family detached, single-family attached, and duplex lots shall not take access to arterial or collector streets unless they are more than two acres in lot size, are not part of a subdivision, and are spaced no closer than the distance specified in Table 3.6.11A, Minimum Arterial and Collector Lot Frontage, from another driveway access located on the same side of the street, and the driveway is designed to prevent vehicles from backing out onto the arterial or collector. In all other cases, access shall be from:
      1. A local street designed and constructed to Parish standards established in this Division; or
      2. A marginal access street.
  • Minimum Arterial and Collector Frontage.
    1. General. In general, the minimum arterial and collector frontage that is required of lots that take direct access from an arterial or collector shall not be less that that shown in Table 3.6.11A, Minimum Arterial and Collector Lot Frontage. No new lots shall be created that have less frontage than set out in Table 3.6.11A, Minimum Arterial Lot Frontage, unless the subdivider provides for common access and cross-access servitudes as set out in subsection C.3., of this Section.
    • Table 3.6.11A
    Minimum Arterial and Collector Lot Frontage
    Posted Speed Limit (mph)Minimum Connection Spacing (ft.)
    ≤ 30 225
    35 275
    40 330
    45 385
    ≥ 50 450
    Table 3.6.11A
    Minimum Arterial and Collector Lot Frontage
    Posted Speed Limit (mph)Minimum Connection Spacing (ft.)
    ≤ 30 225
    35 275
    40 330
    45 385
    ≥ 50 450
    Table 3.6.11A
    Minimum Arterial and Collector Lot Frontage
    Posted Speed Limit (mph)Minimum Connection Spacing (ft.)
    ≤ 30 225
    35 275
    40 330
    45 385
    ≥ 50 450
    Table 3.6.11A
    Minimum Arterial and Collector Lot Frontage
    Posted Speed Limit (mph)Minimum Connection Spacing (ft.)
    ≤ 30 225
    35 275
    40 330
    45 385
    ≥ 50 450
      1. Increased Frontage Requirement. The Parish may require a greater lot frontage for:
        1. Development with driveways that are greater than 25 feet in width (not including curb returns); or
        2. Development that requires more than one access connection to the arterial or collector.
      2. Decreased Frontage Requirement. The Parish may allow a decreased lot frontage for individual lots with common access servitudes and shared access driveways, provided that:
        1. The parcel proposed for development, before subdivision, complies with this Section;
        2. Legal instruments are recorded as provided in subsection E., Common Access and Internal Cross-Access, of this Section.
    1. Access Dimensions. Each lot that contains a single-family detached house or duplex shall have no more than two driveway connections along any street frontage. Driveway width shall not exceed the width set out in Table 3.6.11B, Maximum Width of Access.
    Table 3.6.11B
    Maximum Width of Access
    Use ClassificationStandardMaximum Access Width (ft.)
    Single-Family Residential One-car garage (max. width) 12
    Two-car garage (max. width) 22
    Three-car garage (max. width) 25
    Duplex Two, one-car garages (max. width) 24
    Two, two-car garages (max. width) 27
    Table 3.6.11B
    Maximum Width of Access
    Use ClassificationStandardMaximum Access Width (ft.)
    Single-Family Residential One-car garage (max. width) 12
    Two-car garage (max. width) 22
    Three-car garage (max. width) 25
    Duplex Two, one-car garages (max. width) 24
    Two, two-car garages (max. width) 27
    Table 3.6.11B
    Maximum Width of Access
    Use ClassificationStandardMaximum Access Width (ft.)
    Single-Family Residential One-car garage (max. width) 12
    Two-car garage (max. width) 22
    Three-car garage (max. width) 25
    Duplex Two, one-car garages (max. width) 24
    Two, two-car garages (max. width) 27
    Table 3.6.11B
    Maximum Width of Access
    Use ClassificationStandardMaximum Access Width (ft.)
    Single-Family Residential One-car garage (max. width) 12
    Two-car garage (max. width) 22
    Three-car garage (max. width) 25
    Duplex Two, one-car garages (max. width) 24
    Two, two-car garages (max. width) 27
    1. Common Access and Internal Cross-Access.
      1. Separate Ownership; No Common Plan of Development. Where adjacent properties are separately owned and not part of a common plan of development, the Parish may require common access or internal cross-access as the parcels are developed, substantially improved, or redeveloped. As such, an applicant may be granted temporary individual access if:
        1. The applicant demonstrates that a reasonable offer with regard to cross-access was refused by the adjacent landowner; and
        2. The applicant records a covenant acceptable to the Parish to ensure that the connection will be provided and access will be consolidated upon the earlier of:
          1. Approval for development, substantial improvement, or redevelopment, of the adjacent property, if providing such connection is a requirement of the approval for the adjacent property; or
          2. The applicant's parcel and the adjacent parcel coming under common ownership; and
        3. The applicant demonstrates that the proposed temporary access will not materially affect the safe and efficient flow of traffic.
      2. Common Ownership or Common Plan of Development. Phased development, development sites under the same ownership, or development sites that are consolidated for the purposes of development and comprised of more than one building are considered unified parcels. Unified parcels shall provide access as follows:
        1. The number of connections permitted shall be the minimum number necessary to provide reasonable access to the overall site and not the maximum available for the site's frontage; and
        2. Access to outparcels shall be internalized using the shared circulation system and designed to avoid excessive movement across parking aisles or queuing across surrounding parking and driving aisles.
      3. Terms. The Parish may require that common and cross-access servitudes include one or more of the following:
        1. Sufficient width to accommodate a two-way access between properties, designed to accommodate automobiles and service and loading vehicles.
        2. Stub-outs and other design features to allow abutting properties to be tied in to provide future cross-access.
        3. Linkage to other cross-access drives in the area.
      4. Location of Cross-Access. The location of the connections shall be set by the Parish in accordance with the following:
        1. Shallow sites (less than 200 feet deep) with buildings positioned at or near the front setback line shall provide access along the rear property lines.
        2. Shallow sites (less than 200 feet deep) with buildings positioned at or near the rear setback line shall provide connections aligned with their edges along the sidewalk in front of the buildings.
        3. Deep sites (200 or more feet deep) with outparcels shall provide cross-access points as follows:
          1. To all outparcels, in order to connect them to the parking and circulation areas of the principal parcel;
          2. On side lot or parcel lines of the principal lot or parcel, behind any outparcels that are located within 60 feet of said side lot or parcel lines, in order to permit movement through the area; and
          3. On side lot or parcel lines of the principal lot or parcel, aligned with edges along the sidewalk in front of the buildings.
      5. Dimensions of Cross-Access. Cross-access servitudes shall include at least 24-feet of pavement width.
      6. Approval and Recording of Servitudes.
        1. Access that is shared by adjacent properties, whether under single or separate ownership, requires that an appropriate legal instrument to ensure continued shared access be approved by the Parish and recorded in the official public record at the applicant's expense. The recorded book and page number shall be referenced on any subsequent subdivision plats of the property.
        2. If there is an existing shared access for which there is no recorded legal documentation, such documentation shall be executed and recorded as provided in subsection E.4.a., of this Section.

    Effective on: 2/4/2014

    Sec. 3.6.12 Performance Standards for Residential Streets

  • Floodplain Areas. In floodplain areas, narrower rights-of-way may be approved and drainage accomplished in a manner that provides for the minimum width, while accommodating the stormwater movement. The Parish's Floodplain Administrator shall assist in developing an acceptable cross-section that minimizes environmental impact.
  • Traffic Calming. Straight, or nearly straight, sections of residential streets of a length greater than 500 feet shall be designed to include traffic calming devices.
  • On-Street Parking. Streets in all districts except AG, CN, and RE may be designed to include on-street parking. Design requirements are outlined in Division 3.5, Parking and Loading.
  • Mid-Block Pedestrian Connections. Mid-block connections in the form of public access servitudes and walkways shall be provided along blocks that are 500 feet or greater in length, to establish linkages between blocks and, particularly, to common facilities such as parks and open areas.
  • TNDs and Multi-Housing Neighborhoods. In TNDs and multi-housing neighborhoods, an efficient multimodal system shall be provided that include streets, sidewalks, and trails throughout the development. In the "Center" and "General" subdistricts of a TND, and in areas of multi-housing neighborhoods with lot widths that are less than 50 feet, private alleys shall provide access to residential lots.

    • Effective on: 11/1/2013

    Sec. 3.6.13 Traffic Study

  • Generally. New development, redevelopment, changes in use, or expansions to existing development that are likely to result in additional peak hour or daily vehicular trip generation (compared to the existing condition) in excess of the thresholds set out in subsection B., below, shall submit a traffic study according to the methodologies set out in subsection C. below.
  • Thresholds. Traffic studies are required when any of the following thresholds may be exceeded by the proposed development:
    1. Additional average daily trips generated by the development exceed 500 trips per day, as determined by the Director of Public Works;
    2. Additional PM peak trips generated by the development exceed 100 trips per hour, as determined by the Director of Public Works;
    3. Any residential development that exceeds 150 new dwelling units;
    4. The development is requesting access to an arterial street or state highway;
    5. The development will cause the adjacent street or closest intersection(s) to operate at level of service ("LOS") F; or
    6. The adjacent street or closest intersection(s) already operates at LOS F.
  • Methodologies. Traffic studies shall be prepared by a licensed professional engineer qualified to perform such work.
  • Updated Traffic Study Required. The Director may require an update (amendment) to a previous traffic study or a new study if any of the following thresholds are met:
    1. Changes to the development proposal increases expected trip generation for daily or peak hour trips by more than 15 percent from the original study;
    2. The previous traffic studies are more than 2 years old, unless the Director of Public Works has determined that the conditions have not significantly changed; or
    3. Location, types and/or number of access points for the development has changed.
  • Conditions of Approval. The administrative body responsible for decision making may condition the approval of proposed development on the maintenance of the level of service standards for streets that will be impacted by the development. The administrative body responsible for decision making may authorize phased development that ties required street, intersection, access, signalization, or other improvements (such as, but not limited to additional signage, pavement markings, acceleration/deceleration lanes, etc.) necessary to maintain LOS or improve safety to the timing and level of development proposed for each phase.

    • Effective on: 11/1/2013

    Sec. 3.7.1 Design Standards for Potable Water Facilities

  • Generally. All subdivision and developments shall be provided with an adequate potable water distribution system, including the installation of valves and fire hydrants, in accordance with the following standards, and the specification of the appropriate waterworks district or municipality.
  • Water Service Availability.
    1. The subdivider or developer, or his authorized representative shall make a request in writing to the appropriate waterworks district or municipality as to the availability of water service for the proposed subdivision/development. This request shall be accompanied by a copy of the preliminary subdivision layout plan. A copy of the letter from the waterworks district or municipality stating that potable water is available and indicating the location of existing water service, shall be submitted to the Director with the request for preliminary approval.
    2. Where public water supply is not available and a potable water supply (i.e., individual wells) is available and approved by the health department, the Director may approve the use of individual wells.
  • Minimum Size Subdivision Mains.
    1. Residential Areas. The minimum size main in residential areas shall be eight inches. However, at the discretion of the waterworks district or municipality and with the concurrence of the Director, six-inch mains may be used only where they connect to an eight-inch grid on either end, but in no case shall a six-inch water line extend more than 600 feet in length.
    2. Commercial/Industrial Areas. The minimum size main in commercial or industrial areas and in large subdivided areas shall be either eight inches or 12 inches as the waterworks district or municipality may direct.
  • Minimum Size Development Mains. All development sites shall be served by not less than an eight-inch water main. Shopping centers shall be served by a twelve-inch main to provide adequate fire protection unless a smaller size is approved by the Director.
  • Fire Hydrants. Six-inch fire hydrants with two and one-half inch hose connections and one four-inch pumping connection shall be required for all subdivision and developments. Fire hydrants shall be located no more than 500 feet apart in residential subdivisions or developments and no more than 300 feet apart in commercial or industrial subdivisions or developments and shall be of a type approved by the applicable fire protection unit. In any event the standards of the National Fire Code shall be met.

    • Effective on: 11/1/2013

    Sec. 3.7.2 Design Standards for Sewerage Facilities

  • Generally.
    1. All subdivisions and developments shall be provided with adequate sanitary sewerage facilities.
    2. The subdivider or developer shall install sanitary sewer facilities in accordance with Chapter XIII of the State of Louisiana Sanitary Code, which requires compliance with the latest "Recommended Standards for Sewage Works" (commonly called "Ten States Standards") as published by the Great Lakes-Upper Mississippi River Board of State Sanitary Engineers.
  • Public Sanitary Sewer System Exists and is Available.
    1. The subdivider or developer is required to connect to existing sewer in accordance with Paragraph 13:011-1, Chapter XIII of the State of Louisiana Sanitary Code, as amended, which states: "13:011-1. Connections to sewerage systems. Where there is an established sewerage system and ample water supply, all toilet, bath, laundry, kitchen, and other plumbing fixtures located on any premises within 300 feet of a sewer main or lateral shall be connected therewith, provided that such sewer main or lateral is adequate to serve the premises, and provided that the property owner is legally entitled to make such a connection."
    2. The subdivider or developer shall provide sewer services to each lot in the subdivision or to the development and pay all connection charges as mandated by the public body having jurisdiction over the public sewer system.
  • Public Sanitary Sewer System Does Not Exist or is Not Accessible.
    1. When Plans for a Public Sanitary Sewerage System Exist: When plans for a public sanitary sewerage system exist and the governing public body has made a definite commitment to construct said system, the subdivider or developer shall install permanent sewer lines, laterals, mains, and services to be in conformance with such plans and ready for connection to such public sewer mains. Sewer services shall be minimum six inches in diameter and shall extend at least five feet into each lot.
    2. When Plans for a Public Sanitary Sewerage System Do Not Exist: When plans for a public sanitary sewerage system do not exist or a construction commitment does not exist, the subdivider or developer may install sewerage systems as follows:
      1. Central sewerage system and treatment facility:
        1. The subdivider or developer shall install all sewer lines, mains, laterals, pump stations, treatment facilities and services as required to ensure conformance with the requirements of the State of Louisiana Sanitary Code.
        2. Subdivider or developer shall apply for and obtain the appropriate discharge permit for the treatment facility prior to construction from the health department agency under the NPDES System (National Pollutant Discharge Elimination System).
        3. The subdivider or developer shall make the necessary arrangements for the continued maintenance and operation of the sewerage facilities. The maintenance cost of such a system shall be assessed against each property benefited. Copies of all permits and approvals shall be delivered to the Director prior to final approval.
      2. Individual disposal systems:
        1. The subdivider or developer may install individual disposal systems in lieu of a central system, provided they conform to the requirements of paragraph[s] 13:012-1 through 13:019-2 and appendix "A" of the State of Louisiana Sanitary Code.
        2. Minimum lot areas shall conform to the requirements of the health department and percolation tests and test holes shall be made as directed by the state sanitarian. The individual disposal system, including the size of the septic tanks and size of the tile fields or other secondary treatment device shall also be approved by the state sanitarian. Copies of the permits issued by the state health department shall be filed with the Director prior to final approval.

    • Effective on: 11/1/2013

    Sec. 3.7.3 Design Standards for Lighting Facilities

  • Generally. When the subdivider chooses to install light standards, they shall be aluminum and may be located on either side of the street or in a servitude designated for this purpose, or may be located in the center of the median of the boulevard. There shall be one standard at each intersection and such additional standards located at lot lines, such that the spacing of standards shall not exceed 250 feet, unless otherwise approved by the Director.
  • Arrangement and Costs. It shall be the responsibility of the subdivider/developer or his agent to secure and install light standards and be responsible for making arrangements with the utility company to energize the light fixtures.

    • Effective on: 11/1/2013

    Sec. 3.7.4 Requirements for Electrical Facilities

  • Generally. All electrical power distribution facilities serving lots within a subdivision or a development may be installed underground.
  • High Voltage Distribution/Transmission Facilities. When necessary to construct high voltage distribution or transmission facilities which require overhead installation on poles or towers, said overhead facilities shall be placed within an independent servitude of sufficient width to accommodate maintenance and operation. Said servitude may be located along the rear lot lines of the subdivision or development and shall be maintained by the power company.
  • Arrangements and Costs. The subdivider/developer shall be responsible for making the necessary arrangements with the private or public power company and of paying any fees in connection therewith.

    • Effective on: 3/12/2014

    Sec. 3.7.5 Requirements for Natural Gas Distribution Systems

  • Generally. All subdivisions or developments within 1,500 feet of an existing natural gas distribution system shall be provided with an adequate natural gas distribution system, constructed in accordance with Parts 191 and 192 of Title 49 of the Code of Federal Regulations, and the existing policies of the natural gas company serving the area.
  • Arrangements and Costs. The subdivider/developer shall be responsible for making the necessary arrangements with the private or public gas company and for paying any fees in connection therewith.

    • Effective on: 11/1/2013

    Sec. 3.7.6 Requirements for Telephone Service

  • Generally. All subdivisions and developments shall be provided with adequate telephone service which shall be installed underground.
  • Arrangements and Costs. The subdivider/developer shall be responsible for making the necessary arrangements with the telephone company and for paying any fees required in connection therewith.

    • Effective on: 11/1/2013

    Sec. 3.7.7 Requirements for Cable TV

  • Generally. When a subdivision or development is provided with cable TV service, the service shall be installed underground.
  • Arrangements and Costs. The subdivider/developer shall be responsible for making the necessary arrangements with the cable TV company and for paying any fees required in connection therewith.

    • Effective on: 11/1/2013

    Sec. 3.7.8 Screening of Substations and Utilities

  • Generally. Electrical transformers and substations, water and sewer pump stations, telephone exchange substations, and other similar substations or utilities shall be screened by an opaque fence on all sides sufficient to provide a visual screen from all sides.
  • Exemptions. This screening requirement shall not apply to substations and utilities that are less than six feet in height or completely enclosed within a building or structure. 

    • Effective on: 2/6/2014

    Sec. 3.8.1 Authorization, Findings of Fact, Interpretation

  • Statutory Authorization. The legislature of the state has in R.S. 38:84 delegated the responsibility to local governmental units to adopt regulations designed to minimize flood losses. Therefore, the Parish Council does ordain the provisions of this Division.
  • Findings of Fact.
    1. The flood hazard areas of the Parish are subject to periodic inundation which results in loss of life and property, health and safety hazards, disruption of commerce and governmental services, and extraordinary public expenditures for flood protection and relief, all of which adversely affect the public health, safety, and general welfare.
    2. These flood losses are created by the cumulative effect of obstructions in floodplains which cause an increase in flood heights and velocities, and by the occupancy of flood hazard areas by uses vulnerable to floods and hazardous to other lands because they are inadequately elevated, floodproofed, or otherwise protected from flood damage.
  • Interpretation. In the interpretation and application of this Division, all provisions shall be:
    1. Considered as minimum requirements;
    2. Liberally construed in favor of the governing body; and
    3. Deemed neither to limit nor repeal any other powers granted under state statutes.

    • Effective on: 11/1/2013

    Sec. 3.8.2 Purpose and Methods

  • Statement of Purpose. It is the purpose of this Division to promote the public health, safety, and general welfare and to minimize public and private losses due to flood conditions in specific areas by provisions designed to:
    1. Protect human life and health;
    2. Minimize expenditure of public money for costly flood control projects;
    3. Minimize the need for rescue and relief efforts associated with flooding and generally undertaken at the expense of the general public;
    4. Minimize prolonged business interruptions;
    5. Minimize damage to public facilities and utilities such as water and gas mains, electric, telephone and sewer lines, streets and bridges located in floodplains;
    6. Help maintain a stable tax base by providing for the sound use and development of floodprone areas in such a manner as to minimize future flood blight areas; and
    7. Ensure that potential buyers are notified that property is in a flood area.
  • Methods of Reducing Flood Losses. In order to accomplish its purposes, this Division uses the following methods:
    1. Restrict or prohibit uses that are dangerous to health, safety, or property in times of flood or cause excessive increases in flood heights or velocities;
    2. Require that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction;
    3. Control the alteration of natural floodplains, stream channels, and natural protective barriers which are involved in the accommodation of floodwaters;
    4. Control filling, grading, dredging, and other development which may increase flood damage; and
    5. Prevent or regulate the construction of flood barriers which will unnaturally divert floodwaters or which may increase flood hazards to other lands.

    • Effective on: 11/1/2013

    Sec. 3.8.3 General Provisions

  • Compliance with Division. No structure or land shall hereafter be located, altered, or have its use changed without full compliance with the terms of this Division and other applicable regulations.
  • Lands to Which this Section Applies. This Section shall apply to all areas of special flood hazard within the jurisdiction of the Parish.
  • Basis for Establishing the Areas of Special Flood Hazard. The areas of special flood hazard identified by the Federal Emergency Management Agency in a scientific and engineering report entitled "The Flood Insurance Study for St. Mary Parish," dated April 19, 2017 accompanying Flood Insurance Rate Maps (FIRM) dated April with 19, 2017, and any revisions thereto are hereby adopted by reference and declare to be a part of this Unified Development Code.

    • (Ord. 2077)

    Effective on: 2/22/2017

    Sec. 3.8.4 General Standards for Flood Hazard Reduction

  • Generally. In all areas of special flood hazard, the following provisions are required for all new construction and substantial improvements.
  • Resistance to Hydrodynamic and Hydrostatic Loads. All new construction or substantial improvements shall be designed or modified and adequately anchored to prevent flotation, collapse, or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy;
  • Construction to Minimize Flood Damage. All new construction or substantial improvements shall be constructed by methods and practices that minimize flood damage;
  • Flood-Damage Resistant Materials. All new construction or substantial improvements shall be constructed with materials resistant to flood damage;
  • Protection of Building Service Facilities. All new construction or substantial improvements shall be constructed with electrical, heating, ventilation, plumbing, and air-conditioning equipment and other service facilities that are designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding;
  • Protection of Water Supply Systems. All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system;
  • Protection of Sanitary Sewer Systems. New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharge from the systems into floodwaters; and
  • Location of On-Site Waste Disposal Systems. Onsite waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding.

    • Effective on: 2/4/2014

    Sec. 3.8.5 Specific Standards for Flood Hazard Reduction

  • Generally. In all areas of special flood hazards where base flood elevation data have been provided as set forth in Section 3.8.9, Warning and Disclaimer of Liability, Section 4.6.2B.8., Floodplain Administrator, or Section 3.8.6, Standards for Subdivision Approvals, the following provisions are required:
  • Residential Construction. New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to or above the base flood elevation. A registered professional engineer, architect, or land surveyor shall submit a certification to the floodplain administrator that the standard of this subsection as proposed in Section 5.3.1B.1., Application Requirements, is satisfied.
  • Nonresidential Construction. New construction and substantial improvements of any commercial, industrial, or other nonresidential structure shall either have the lowest floor, including basement, elevated to or above the base flood level or, together with attendant utility and sanitary facilities, be designed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect shall develop and/or review structural design, specifications, and plans for the construction, and such engineer or architect shall certify that the design and methods of construction are in accordance with accepted standards of practice as outlined in this subsection. A record of such certification which includes the specific elevation, in relation to mean sea level, to which such structures are floodproofed shall be maintained by the floodplain administrator.
  • Enclosures. New construction and substantial improvements, with fully enclosed areas below the lowest floor that are usable for parking of vehicles, building access or storage in an area other than a basement and which are subject to flooding, shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must either be certified by a registered professional engineer or architect or meet or exceed the following minimum criteria:
    1. A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided.
    2. The bottoms of all openings shall be no higher than one foot above grade.
    3. Openings may be equipped with screens, louvers, valves, or other coverings or devices, provided that they permit the automatic entry and exit of floodwaters.
  • Manufactured Homes.
    1. Require that all manufactured homes to be placed within Zone A on a community's FHBM or FIRM shall be installed using methods and practices which minimize flood damage. For the purposes of this requirement, manufactured homes must be elevated and anchored to resist flotation, collapse, or lateral movement. Methods of anchoring may include, but are not limited to, use of over-the-top or frame ties to ground anchors. This requirement is in addition to applicable state and local anchoring requirements for resisting wind forces.
    2. Require that manufactured homes that are placed or substantially improved within Zones A1-30, AH, and AE on the community's FIRM on sites (i) outside of a manufactured home park or subdivision, (ii) in a new manufactured home park or subdivision, (iii) in an expansion to an existing manufactured home park or subdivision, or (iv) in an existing manufactured home park or subdivision on which a manufactured home has incurred "substantial damage" as a result of a flood, be elevated on a permanent foundation such that the lowest floor of the manufactured home is elevated to or above the base flood elevation and be securely anchored to an adequately anchored foundation system to resist flotation, collapse, and lateral movement.
    3. Require that manufactured homes be placed or substantially improved on sites in an existing manufactured home park or subdivision with Zones A1-30, AH and AE on the community's FIRM that are not subject to the provisions of paragraph E. of this Section be elevated so that either:
      1. The lowest floor of the manufactured home is at or above the base flood elevation, or
      2. The manufactured home chassis is supported by reinforced piers or other foundation elements of at least equivalent strength that are no less than 36 inches in height above grade and be securely anchored to an adequately anchored foundation system to resist flotation, collapse, and lateral movement.
  • Recreational Vehicles. Require that recreational vehicles placed on-sites within Zones A1-30, AH, and AE on the community's FIRM either (i) be on the site for fewer than 180 consecutive days, (ii) be fully licensed and ready for highway use, or (iii) meet the permit requirements of Section 5.3.1B.1., Floodplain Permit Procedures, and the elevation and anchoring requirements for "manufactured homes" in paragraph E. of this Section. A recreational vehicle is ready for highway use if it is on its wheels or jacking system is attached to the site only by a quick disconnect type utilities and security devices, and has no permanently attached additions.

    • Effective on: 2/4/2014

    Sec. 3.8.6 Standards for Subdivision Proposals

  • Generally. The following provisions shall apply to subdivision proposals.
  • Consistency Required. All subdivision proposals including manufactured home parks and subdivisions shall be consistent with this Division.
  • Floodplain Permit Required. All proposals for the development of subdivisions including placement of manufactured home parks and subdivisions shall meet the development permit requirements of Section 5.3.1, Floodplain Permit Procedures, and the provisions of this Division.
  • Base Flood Elevation Data Required. Base flood elevation data shall be generated for subdivision proposals and other proposed development including manufactured home parks and subdivisions which is greater than 50 lots or five acres, whichever is lesser, if not otherwise provided pursuant to Section 3.8.3C., General Provisions, or Section 4.6.2, Floodplain Administrator.
  • Adequate Drainage Required. All subdivision proposals including manufactured home parks and subdivisions shall have adequate drainage provided to reduce exposure to flood hazards.
  • Public Utilities and Facilities Required. All subdivision proposals including manufactured home parks and subdivisions shall have public utilities and facilities such as sewer, gas, electrical, and water systems located and constructed to minimize or eliminate flood damage.

    • Effective on: 2/4/2014

    Sec. 3.8.7 Standards for Areas of Shallow Flooding (AO/AH Zones)

  • Generally. Located within the areas of special flood hazard established in Section 3.8.3C., General Provisions, are areas designated as shallow flooding. These areas have special flood hazards associated with base flood depths of one to three feet where a clearly defined channel does not exist, where the path of flooding is unpredictable, and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow; therefore, the following provisions apply:
  • Elevation of New Construction and Substantial Improvements (Residential). All new construction and substantial improvements of residential structures have the lowest floor, including basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet on the community's FIRM; at least two feet if no depth number is specified.
  • Elevation of New Construction and Substantial Improvements (Nonresidential). All new construction and substantial improvements of nonresidential structures:
    1. Have the lowest floor, including the basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet on the community's FIRM, at least two feet if no depth number is specified; or
    2. Together with attendant utility and sanitary facilities be designed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effects of buoyancy.
  • Certification Required. A registered professional engineer or architect shall submit a certification to the floodplain administrator that the standards of this Section as proposed in Section 5.3.1B.1., Application Requirements, are satisfied.
  • Drainage Paths. Require within zones AH or AO adequate drainage paths around structures on slopes, to guide floodwaters around and away from proposed structures.

    • Effective on: 11/1/2013

    Sec. 3.8.8 Standards for Areas of Shallow Flooding (AO/AH Zones)

  • Generally. Located within the areas of special flood hazard, established in Section 3.8.3C., General Provisions, are areas designated as coastal high hazard areas: zones V1-30, VE and/or V. These areas have special flood hazards associated with high velocity waters from tidal surges and hurricane wave wash; therefore, in addition to meeting all provisions outlined in this Division, the following provisions must also apply:
  • Elevation Determination. Obtain the elevation in relation to mean sea level of the bottom of the lowest structural member of the lowest floor, excluding pilings and columns, of all new and substantially improved structures, and whether or not such structures contain a basement. The floodplain administrator shall maintain a record of all such information.
  • Required Improvements.
    1. All new construction shall be located landward of the reach of mean high tide.
    2. All new construction and substantial improvements shall be elevated on pilings and columns so that:
      1. The bottom of the lowest horizontal structural member of the lowest floor, excluding the pilings or columns, is elevated to or above the base flood level;
      2. The pile or column foundation and structure attached thereto is anchored to resist flotation, collapse and lateral movement due to the effects of wind and water loads acting simultaneously on all building components. Water loading values used shall be those associated with the base flood. Wind loading values used shall be those required by applicable state or local building standards. A registered professional engineer or architect shall develop or review the structural design, specifications and plans for the construction, and shall certify that the design and methods of construction to be used are in accordance with accepted standards of practice for meeting the provisions of subsections C.2.a. and b. of this Section.
    3. Provide that all new construction and substantial improvements have the space below the lowest floor either free of obstruction or constructed with nonsupporting breakaway walls, open wood latticework, or insect screening intended to collapse under wind and water loads without causing collapse, displacement, or other structural damage to the elevated portion of the building or supporting foundation system. For the purpose of this Section, a breakaway wall shall have a design safe loading resistance of not less than 10 and no more than 20 pounds per square foot. Use of breakaway walls which exceed a design safe loading resistance of 20 pounds per square foot (either by design or when so required by local or state codes) may be permitted only if a registered professional engineer or architect certifies that the design proposed meet the following conditions:
      1. Breakaway wall collapse shall result from a water load less than that which would occur during the base flood; and
      2. The elevated portion of the building and supporting foundation system shall not be subject to collapse, displacement, or other structural damage due to the effects of wind and water loads acting simultaneously on all building components (structural and nonstructural). Water loading values used shall be those associated with the base flood. Wind loading values used shall be those required by applicable state or local building standards. Such enclosed space shall be useable solely for parking of vehicles, building access, or storage. Such space shall not be used for human habitation.
  • Prohibitions.
    1. Prohibit the use of fill or structural support of one building.
    2. Prohibit manmade alteration of sand dunes and mangrove stands which increase potential flood damage.
  • Manufactured Homes. Required that manufactured homes placed or substantially improved within Zone V1-30, V, and VE on the community's FIRM on sites (i) outside of a manufactured home park or subdivision, (ii) in a new manufactured home park or subdivision, (iii) in an expansion to an existing manufactured home park or subdivision, or (iv) in an existing manufactured home park or subdivision on which a manufactured home has incurred "substantial damage" as the result of a flood, meet the standards of paragraphs A. through D. of this Section and that manufactured homes placed or substantially improved on other sites in an existing manufactured home park or subdivision within Zones V1-30, V, and VE on the community's FIRM meet the requirements of Section 3.8.5E., Specific Standards for Flood Hazard Reduction, of this Division.
  • Recreational Vehicles. Require that recreational vehicles placed on-sites within Zones V1-30, V, and VE on the community's FIRM either (i) be on the site for fewer than 180 consecutive days, (ii) be fully licenses and ready for highway use, or (iii) meet the requirements in Section 5.3.1, Floodplain Permit Procedures, of this Division and paragraphs A. through D. of this Section. A recreational vehicle is ready for highway use if it is on its wheels or jacking system, is attached to the site only by quick disconnect type utilities and security devices, and has no permanently attached additions.

    • Effective on: 2/4/2014

    Sec. 3.8.9 Warning and Disclaimer of Liability

  • Warning. The degree of flood protection required by this Division is considered reasonable for regulatory purposes and is based on scientific and engineering considerations. On rare occasions greater floods can and will occur and flood heights may be increased by manmade or natural causes. This Division does not imply that land outside the areas of special flood hazards or uses permitted within such areas will be free from flooding or flood damages.
  • Disclaimer of Liability. This Division shall not create liability on the part of the community or any official or employee thereof for any flood damages that result from reliance on this Division or any administrative decision lawfully made thereunder.

    • Effective on: 2/4/2014

    Sec. 3.8.10 Abrogation and Greater Restrictions

    Generally. This Division is not intended to repeal, abrogate, or impair any existing servitudes, covenants, or deed restrictions. However, where this Division and other regulations conflict or overlap, whichever imposes the more stringent restrictions shall prevail.

    Effective on: 2/4/2014

    Sec. 3.9.1 Drainage Impact Study Required

  • Generally.
    1. The Parish recognizes that water quality and quantity requirements of federal, state, and Parish laws applicable to surface waters provide reasonable guidance for the control of storm water runoff for the purpose of protecting local water resources from degradation.
    2. It is determined that the control of storm water runoff discharges from land development projects and other construction activities in order to manage and minimize increases in storm water runoff rates and volumes, soil erosion, stream channel erosion, and nonpoint source pollution associated with storm water runoff is in the public interest and will prevent threats to public health and safety.
  • General requirements.
    1. Adequate Provision Required. The Director shall not recommend for approval any subdivision or development which does not make adequate provisions for storm or flood water runoff. The storm water drainage system shall be separate and independent of any sanitary sewer system.
    2. Floodplain Areas. The Director may when he deems it necessary for the health, safety, or welfare of the present and future population of the area and necessary to the conservation of water, drainage, and sanitary facilities, prohibit the subdivision of any portion of the property which lies within the floodplain of any area stream or drainage course. These floodplain areas shall be preserved from any and all destruction or damage resulting from cleaning, grading or dumping of earth, waste material, stumps and other debris, except at the discretion of the Director.
    3. Lot Drainage. Lots shall be laid out so as to provide positive drainage away from all buildings and individual lot drainage shall be coordinated with the general storm drainage pattern or open ditch drainage for the area. Drainage shall be designed so as to avoid storm water runoff from each lot on to adjacent lots.
  • Drainage Impact Study.
    1. Drainage Impact Studies Required. Any owner, developer, subdivider or their agents who apply to subdivide, develop, improve or build upon any residential, industrial or commercial development or subdivision must, in addition to any other requirement of law or ordinance, submit a drainage impact study in conformity with this Section and Section 3.9.2, Information Required in Drainage Impact Study.
    2. Number of Copies; Required Review. Two copies of the required drainage impact study of the proposed development and surrounding affected areas must be submitted. The subdivision construction plans will not be reviewed and approved until the drainage impact analysis has been reviewed. The Director of Public Works may refer the study for review by the State of Louisiana or appropriate federal agencies.
  • Exemptions.
    1. Mandatory Exemptions. The following development activities are exempted from the requirements of preparing a drainage impact study:
      1. Development in which the area of impervious surface does not exceed 20 percent of the development area at the point of discharge from the site. The total impervious area shall include all buildings, driveways, sidewalks, streets, parking lots, lakes, ponds, etc. All undeveloped open space, common area, etc., must be clearly identified.
      2. Additions or modifications to existing developments which result in no more than a 10 percent increase in existing impervious area and which have existing public storm drainage facilities designed to accommodate runoff from the existing site.
    2. Discretionary Exemptions. Developers may request that the Planning and Zoning Commission approve an exemption from providing the drainage impact study. If such a request is granted, the Director will provide written approval. A copy of the exemption authorization shall be forwarded to the Director of Public Works and no detailed drainage impact study shall be required for the development. An exemption under this Section must be requested in writing that includes specific details of the proposed development. An exemption under this Section shall be considered for approval provided:
      1. The proposed development results in no more than a 10-year predevelopment peak discharge at the point of discharge from the development site.
      2. The site is located within existing developed areas which are served by a network of public storm drainage facilities which were designed to accommodate runoff from the development site. Notwithstanding the above, a discretionary exemption may be granted provided sufficient information can be submitted indicating that the runoff from the proposed development is consistent with, and discharges to, a previously approved development or is a part of an approved larger plan of development, both having adequate drainage facilities.

    • Effective on: 11/1/2013

    Sec. 3.9.2 Information Required in Drainage Impact Study

  • Generally. The drainage impact study shall include the minimum information requirements of this Section.
  • Location. Describe location of subject property; locate by township and range; identify adjacent developments, major drainage outfalls, streets, highways, lot and block by page number or other reference to recordation with the Parish clerk of court; and provide a vicinity map.
  • Description. Describe the predominate existing land use and future land use in projected watershed. Describe the proposed development, soil types, vegetative cover, watershed slopes and provide an estimate of percent of impervious area for pre and post development conditions. Provide photos of existing channels, ditches, natural drains and drainage structures.
  • Watershed Map. Delineate drainage boundaries; indicate the acreage; and show slope of basins, and peak 10-year runoff rate at entry and exit points of the development. The watershed map should indicate the location of existing channels, ditches, natural drains, proposed major drainage structures, channel realignments and cross section locations.
  • Hydrologic Design.
    1. The drainage impact analysis shall indicate existing condition peak 25-year flow rates at the development entry and exit points. Interior drainage shall be designed to 10-year flow rates.
    2. The drainage impact analysis should indicate future condition peak 25-year flow rates at the development entry and exit points.
  • On-Site Hydraulic Capacity. Indicate capacity of any existing drainage outfall facility (ditch, canal, culvert, bridge, etc.) within the proposed development site and required type size, and capacity of any proposed outfall facilities as defined above.
  • Off-Site Hydraulic Capacity. Determine capacity of existing downstream outfall facilities (ditches, canals, culverts, bridges, etc.) that will be utilized to convey flow from the downstream limits of the proposed development to the first public outfall as identified by the Parish engineer. An inventory of downstream structures including size, type, invert elevation, and cover topping elevation should be made. Channel cross sections at upstream and downstream limits of the proposed development, at structure locations and at intermediate canal locations shall be required to adequately define existing channel capacities.
  • Special Site Conditions. Special conditions which may exist at the proposed development site should be clearly identified including but not limited to such items as:
    1. Areas of special flood hazard (firm zones A and AE);
    2. Regulatory floodway;
    3. Fill placement location and mitigation requirements;
    4. Potential wetland sites;
    5. Churches;
    6. Schools;
    7. Cemeteries;
    8. Landfills and hazardous waste sites;
    9. Parks.
  • Study Conclusions and Recommendations. The study should clearly identify the results and conclusions of the analysis and provide recommendations of any required action(s) so that no adverse impact is experienced by surrounding properties.

    • Effective on: 11/1/2013

    Sec. 3.9.3 Design Standards for Drainage and Storm Sewer

  • Generally. Drainage and storm sewer infrastructure shall comply with the following.
  • Design Rainfall Intensity.
    1. All drainage on local and collector streets in a subdivision or development will be designed to accommodate storm water runoff equivalent to a minimum five-year storm recurrence interval.
    2. All major outfall drainage canals or water courses will be designed to accommodate storm water runoff from a 10-year storm recurrence interval.
    3. All subsurface drainage, roadside ditch drainage and outfall drainage courses serving thoroughfares and areas adjacent thereto shall be designed in accordance with the requirements of Table 3.6.2A, Geometric and Design Standards for Streets.
  • Subsurface Drainage. If subsurface drainage is to be incorporated in a subdivision or development, it will be designed by use of the rational method of runoff analysis as per the procedure outlined in the highway department's Hydraulic Manual.
    1. The minimum coefficient of runoff to be used in single-family residential or manufactured home subdivisions shall be 0.40.
    2. The minimum coefficient of runoff to be used in multiple-family, commercial, or industrial or development will be determined by the amount of impervious surfaces within the development, but in no case shall be less than 0.50.
    3. The maximum initial time of concentration for overland flow shall not exceed 20 minutes.
    4. The roughness coefficient in subsurface drain pipes shall be as shown in the highway department's Hydraulics Manual.
    5. Maximum difference in hydraulic grade will be one that will produce a velocity of not more than eight feet per second for open channels.
    6. Minimum inside diameter of drainage structures will be one that will produce a velocity of not less than 2½ feet per second.
    7. Minimum inside diameter of culvert pipe to be used for subsurface cross-drains shall be 12 inches.
    8. The minimum inside diameter of culvert pipe parallel to a roadway shall be 15 inches.
    9. Inlets shall be provided so that surface water is not carried across an intersection, nor for a distance of more than 250 feet in the street gutter. When hydraulic analysis indicates that curb capacities are exceeded at any point, no further allowance shall be made for flow beyond that point, and basins shall be used to intercept flow at that point. Under no circumstance will the distance between adjacent drainage structures or manholes within a continuous subsurface drainage system be greater than that specified in Table 3.9.3, Maximum Distance Between Adjacent Drainage Structures:
    • Table 3.9.3
    Maximum Distance Between Adjacent Drainage Structures
    Inches Feet
    15 and less 150
    18 to 21 300
    24 to 30 400
    42 and larger 600
    Table 3.9.3
    Maximum Distance Between Adjacent Drainage Structures
    Inches Feet
    15 and less 150
    18 to 21 300
    24 to 30 400
    42 and larger 600
    Table 3.9.3
    Maximum Distance Between Adjacent Drainage Structures
    Inches Feet
    15 and less 150
    18 to 21 300
    24 to 30 400
    42 and larger 600
    Table 3.9.3
    Maximum Distance Between Adjacent Drainage Structures
    Inches Feet
    15 and less 150
    18 to 21 300
    24 to 30 400
    42 and larger 600
      1. Catch basins shall be placed at or near property lines in mid-block as the grade may dictate.
    1. Open Ditches and Channels. Ditches and channels should be designed with sufficient depth and cross-sectional area to adequately remove storm water runoff from the proposed subdivision or development. If ditches or channels are used to transport runoff outside the limits of a subdivision or development, they shall be adequately designed to accommodate runoff from future expansions of the subdivision or development.
      1. Ditches and channels shall be designed as to provide a minimum hydraulic grade line of 0.01 feet in 100 feet. Depth and end-area shall be in accordance with the Manning's equation for open channel flow. The roughness coefficient for open-channel flow shall not be less than 0.035.
      2. The ditch grade elevation of all roadside ditches shall be set to adequately accommodate the recommended size of all driveway culverts to be installed throughout the subdivision. The top of the culvert shall be set at a minimum of four inches below the edge of the adjacent street.
      3. The elevation of the hydraulic grade line within all major outfall channels, roadside ditches and/or subsurface drainage culverts shall be designed to provide a minimum freeboard of six inches from the lowest point along any street or lot throughout the subdivision or development.

    Effective on: 11/1/2013

    Sec. 3.10.1 General Environmental Standards

  • Generally. All uses and activities permitted by this UDC within the unincorporated portion of the Parish shall conform to the performance measures and standards of this Section, using adequate and appropriate prevention and/or mitigation techniques as necessary:
  • Noise. No use shall be permitted that causes serious annoyance to occupants of adjoining premises due to excessive noise.
  • Vibration. No use shall be permitted which produces ground vibrations noticeable without instruments at the lot line of the premises on which the use is located.
  • Smoke Emissions. All uses shall comply with local, state and federal regulations pertaining to the emission of smoke.
  • Odors. No use shall be permitted to produce the emission of objectionable or offensive odors in such concentration as to be readily perceptible at any point at or beyond the lot line of the property on which the use is located, subject to applicable state air quality regulations.
  • Toxic or Noxious Matter. No use shall for any period of time discharge across boundaries of a lot line on which it is located, toxic or noxious matter in such concentrations as to be detrimental to or endanger the public health, safety, comfort, or welfare, or cause injury or damage to persons, property, or the use of property or land, or render unclean the waters of the state to the extent of being harmful or inimical to public health, animal or aquatic life, or the use of such waters for domestic water supply, recreation, or other legitimate and necessary uses. Disposal of toxic or hazardous waste within the Parish is specifically prohibited.
  • Nuclear Radiation. Any operation involving radiation (i.e., the use of gamma rays, x-rays, alpha and beta particles, high speed electrons, neutrons, protons, and other atomic or nuclear particles), shall be permitted only in accordance with state and federal laws, rules, and regulations, or any other applicable regulation.
  • Electromagnetic Radiation and Interference. No person shall operate or cause to be operated for any purpose a planned or unplanned source of electromagnetic radiation which does not comply with the current regulations of the Federal Communications Commission (FCC) regarding such sources of electromagnetic radiation. No use, activity, or process shall be conducted which produces electromagnetic interference with normal radio or television reception.
  • Heat or Glare. Any activity producing heat or glare shall be carried on in such a manner that such heat or glare is not perceptible at any lot line. Exposed sources of light, including bare bulbs and tubes and immediately adjacent reflecting surfaces, shall be shielded to avoid creating a nuisance across lot lines. The light intensity from illumination of any kind shall not exceed fifty-foot lamberts at any point along the line of the lot containing the light source.

    • Effective on: 11/1/2013

    Sec. 3.11.1 Bufferyard Requirements

  • Bufferyard Classifications. Bufferyards are classified from less opaque ("Type A") to more opaque ("Type E"). The width and composition of bufferyards shall be as set out in Table 3.11.1A, Bufferyard Classifications.
    • Table 3.11.1A
    Bufferyard Classifications
    Type % Opacity Width Required Plantings per 100 Linear Feet Berm or Opaque Wall or Fence
    Canopy Trees Evergreen Trees Understory Trees Shrubs
    Type A 10% 5 ft. 1 1 1 10 -
    Type B 23% 10 ft. 2 2 2 20 -
    Type C 52% 25 ft. 3 3 3 30 3 foot high berm, wall, or fence
    Type D 74% 40 ft. 3 3 3 30 6 foot high berm, wall, or fence
    Type E 99% 50 ft. 4 4 4 40 6 foot high berm, wall, or fence
    Table 3.11.1A
    Bufferyard Classifications
    Type % Opacity Width Required Plantings per 100 Linear Feet Berm or Opaque Wall or Fence
    Canopy Trees Evergreen Trees Understory Trees Shrubs
    Type A 10% 5 ft. 1 1 1 10 -
    Type B 23% 10 ft. 2 2 2 20 -
    Type C 52% 25 ft. 3 3 3 30 3 foot high berm, wall, or fence
    Type D 74% 40 ft. 3 3 3 30 6 foot high berm, wall, or fence
    Type E 99% 50 ft. 4 4 4 40 6 foot high berm, wall, or fence
    Table 3.11.1A
    Bufferyard Classifications
    Type % Opacity Width Required Plantings per 100 Linear Feet Berm or Opaque Wall or Fence
    Canopy Trees Evergreen Trees Understory Trees Shrubs
    Type A 10% 5 ft. 1 1 1 10 -
    Type B 23% 10 ft. 2 2 2 20 -
    Type C 52% 25 ft. 3 3 3 30 3 foot high berm, wall, or fence
    Type D 74% 40 ft. 3 3 3 30 6 foot high berm, wall, or fence
    Type E 99% 50 ft. 4 4 4 40 6 foot high berm, wall, or fence
    Table 3.11.1A
    Bufferyard Classifications
    Type % Opacity Width Required Plantings per 100 Linear Feet Berm or Opaque Wall or Fence
    Canopy Trees Evergreen Trees Understory Trees Shrubs
    Type A 10% 5 ft. 1 1 1 10 -
    Type B 23% 10 ft. 2 2 2 20 -
    Type C 52% 25 ft. 3 3 3 30 3 foot high berm, wall, or fence
    Type D 74% 40 ft. 3 3 3 30 6 foot high berm, wall, or fence
    Type E 99% 50 ft. 4 4 4 40 6 foot high berm, wall, or fence
    1. District Bufferyard Standards. Table 3.11.1B, District Boundary Bufferyard Standards, sets out the classification of bufferyard that is required between zoning districts that are not separated by a public street. The table is a matrix in which all districts are shown. Rows show the zoning of the parcel proposed for development, and columns show the zoning of the adjoining land. Two letters are shown for each condition (for example, A and C). The bufferyard required for the proposed use is listed first. The letter listed second is the buffer that is required on the adjoining property. A "-" means that no bufferyard is required.
    Table 3.11.1B
    District Boundary Bufferyard Standards
    Zoning of Proposed Development Adjoining District
    AG, CN RE SR, HR EN, MH, NC GC, HC LI HI
    AG, CN - / - - / A - / B - / C - / D - / D - / E
    RE A / - - / - B / A B / B B / C B / B A / D
    SR, HR B / - A / B - / - B / C B / D B / C A / E
    EN, MH, NC C / - B / B B / B - / - B / C A / B A / C
    GC, HC D / - C / B D / B C / B A / A C / B A / C
    LI D / - C / B C / B B / A B / C - / - A / B
    HI E / - D / A E / A C / A C / A B / A A / A
    Table 3.11.1B
    District Boundary Bufferyard Standards
    Zoning of Proposed Development Adjoining District
    AG, CN RE SR, HR EN, MH, NC GC, HC LI HI
    AG, CN - / - - / A - / B - / C - / D - / D - / E
    RE A / - - / - B / A B / B B / C B / B A / D
    SR, HR B / - A / B - / - B / C B / D B / C A / E
    EN, MH, NC C / - B / B B / B - / - B / C A / B A / C
    GC, HC D / - C / B D / B C / B A / A C / B A / C
    LI D / - C / B C / B B / A B / C - / - A / B
    HI E / - D / A E / A C / A C / A B / A A / A
    Table 3.11.1B
    District Boundary Bufferyard Standards
    Zoning of Proposed Development Adjoining District
    AG, CN RE SR, HR EN, MH, NC GC, HC LI HI
    AG, CN - / - - / A - / B - / C - / D - / D - / E
    RE A / - - / - B / A B / B B / C B / B A / D
    SR, HR B / - A / B - / - B / C B / D B / C A / E
    EN, MH, NC C / - B / B B / B - / - B / C A / B A / C
    GC, HC D / - C / B D / B C / B A / A C / B A / C
    LI D / - C / B C / B B / A B / C - / - A / B
    HI E / - D / A E / A C / A C / A B / A A / A
    Table 3.11.1B
    District Boundary Bufferyard Standards
    Zoning of Proposed Development Adjoining District
    AG, CN RE SR, HR EN, MH, NC GC, HC LI HI
    AG, CN - / - - / A - / B - / C - / D - / D - / E
    RE A / - - / - B / A B / B B / C B / B A / D
    SR, HR B / - A / B - / - B / C B / D B / C A / E
    EN, MH, NC C / - B / B B / B - / - B / C A / B A / C
    GC, HC D / - C / B D / B C / B A / A C / B A / C
    LI D / - C / B C / B B / A B / C - / - A / B
    HI E / - D / A E / A C / A C / A B / A A / A
    1. Existing Adjacent Development without Bufferyards. Where the adjoining property is already developed and does not have the required bufferyard, the proposed development shall provide a bufferyard of the next most opaque classification than the more opaque of the two bufferyards required (e.g., if the requirement is C / A, and the adjoining property is already developed and does not have a bufferyard, then the developer must install a Type D bufferyard).
    2. Buffering Existing Residential Development. The Parish may require an increase in the level of opacity of a bufferyard (e.g., from Type A to Type B) between new residential development and existing residential development, if:
      1. The lot widths of the new development are less than 80 percent of the lot widths of the nearest lots of the existing development;
      2. The building height of the new development is more than eight feet taller than the building height of the existing development; or
      3. The housing types that are located on the lots that abut existing development are different from the housing types of the existing development (e.g., new townhome lots abutting existing single-family detached lots).
    3. Parking Bufferyard Standards. Parking lot bufferyards are located along the perimeter of parking lots. Their purpose is to mitigate the impact of headlights on streets and abutting residential property, and to reduce the aesthetic impact of parked cars on the character of the street.
      1. Where Required. Parking lot bufferyards are required:
        1. Between parking lots and abutting residential lots, unless:
          1. The area between the parking lot and the abutting lot is occupied by a building; or
          2. Another type of bufferyard is required (e.g., a district boundary bufferyard) and the other bufferyard provides screening between a height of zero and three feet above grade.
        2. Between parking lots and streets, except in areas where:
          1. The edge of the parking lot is at least 25 feet away from the edge of pavement; or
          2. The elevation of the parking lot is at least three feet below the crown of the street; or
          3. The area between the parking lot and the street is occupied by a building or access point to the parcel proposed for development; or
          4. Another type of bufferyard is provided along the street that includes buffering between a height of zero and three feet above grade.
      2. Composition. Parking lot bufferyards shall be composed of any of the following, set in a bufferyard area that is at least three feet wide:
        1. A three-foot high masonry wall, measured from the surface of the parking lot in the area that is closest to the wall; and / or
        2. Shrubs planted to form a continuous buffer that is at least three feet in height if the plants form a hedge with comparable opacity from the ground to three feet in height, or five feet in height if ornamental grasses are used that do not provide opacity that is comparable to a hedge at three feet in height. If shrubs or ornamental grasses are used, the landscape area shall be set back from parking spaces:
          1. Three feet from the edge of pavement if there are no curbs or wheel stops; or
          2. Three feet from the face of the curb or parking bumper that faces the parking space. See Figure 3.11.1, Illustrative Composition of Parking Lot Bufferyard.
    Figure 3.11.1
    Illustrative Composition of Parking Lot Bufferyard
    Illustrative Parking Lot Bufferyard
    1. Street Bufferyard Standards. The bufferyard standards in Table 3.11.1C, Bufferyard Requirements for Streets, address the type of bufferyard that is required along arterial, collector, and local streets (for classifications, see Table 3.11.1A, Bufferyard Classifications).
    Table 3.11.1C
    Bufferyard Requirements for Streets
    Zoning of Proposed Development Adjoining Streets
    ArterialCollector Local
    AG, CN -1 -1 -1
    RE C2 B2 -
    SR C B3 -
    HR, MR, MH B - -
    NC A A -
    GC - - -
    HC - - -
    LI B A A
    HR B B A
    TABLE NOTES:
    1 For agricultural or forestry use only, no buffer is required. However, residential subdivisions in those areas shall follow the requirements for the Residential Estate district.
    2 Single-family cluster, conservation subdivisions, and preservation subdivisions shall provide a Type D bufferyard along arterials and a Type C bufferyard along collectors.
    3 Not required along collectors within traditional neighborhood developments.
    Table 3.11.1C
    Bufferyard Requirements for Streets
    Zoning of Proposed Development Adjoining Streets
    ArterialCollector Local
    AG, CN -1 -1 -1
    RE C2 B2 -
    SR C B3 -
    HR, MR, MH B - -
    NC A A -
    GC - - -
    HC - - -
    LI B A A
    HR B B A
    TABLE NOTES:
    1 For agricultural or forestry use only, no buffer is required. However, residential subdivisions in those areas shall follow the requirements for the Residential Estate district.
    2 Single-family cluster, conservation subdivisions, and preservation subdivisions shall provide a Type D bufferyard along arterials and a Type C bufferyard along collectors.
    3 Not required along collectors within traditional neighborhood developments.
    Table 3.11.1C
    Bufferyard Requirements for Streets
    Zoning of Proposed Development Adjoining Streets
    ArterialCollector Local
    AG, CN -1 -1 -1
    RE C2 B2 -
    SR C B3 -
    HR, MR, MH B - -
    NC A A -
    GC - - -
    HC - - -
    LI B A A
    HR B B A
    TABLE NOTES:
    1 For agricultural or forestry use only, no buffer is required. However, residential subdivisions in those areas shall follow the requirements for the Residential Estate district.
    2 Single-family cluster, conservation subdivisions, and preservation subdivisions shall provide a Type D bufferyard along arterials and a Type C bufferyard along collectors.
    3 Not required along collectors within traditional neighborhood developments.
    Table 3.11.1C
    Bufferyard Requirements for Streets
    Zoning of Proposed Development Adjoining Streets
    ArterialCollector Local
    AG, CN -1 -1 -1
    RE C2 B2 -
    SR C B3 -
    HR, MR, MH B - -
    NC A A -
    GC - - -
    HC - - -
    LI B A A
    HR B B A
    TABLE NOTES:
    1 For agricultural or forestry use only, no buffer is required. However, residential subdivisions in those areas shall follow the requirements for the Residential Estate district.
    2 Single-family cluster, conservation subdivisions, and preservation subdivisions shall provide a Type D bufferyard along arterials and a Type C bufferyard along collectors.
    3 Not required along collectors within traditional neighborhood developments.
    1. Credit for Street Trees. Street trees provided according to Section 3.11.2, Development Landscaping, shall be counted towards the buffering requirements of this Section.

    Effective on: 11/1/2013

    Sec. 3.11.2 Development Landscaping

  • Street Trees. Street trees are trees that are planted within the street right-of-way, either in parkways, tree grates in sidewalks, or medians. Street trees are required:
    1. Along both sides of all new streets in the center and general subdistricts of traditional neighborhood developments; and
    2. Along both sides of all new streets in RE, SR, HR, and LI districts.
    • Figure 3.11.2
    Street Trees
    Street trees are shown in color
    Illustrative Street Trees
    1. Types and Species of Street Trees. To maintain a consistent appearance along individual street segments:
      1. All street trees shall be canopy trees that are suitable for installation in the space within the parkway or within a tree grate, as applicable, unless the understory trees are approved for specific effect in limited area pursuant to subsection B.2., below.
      2. Understory trees may be approved in parkways, provided that:
        1. 1.6 understory trees are provided for each canopy tree that would otherwise required, and spacing between trees is proportionately reduced; and
        2. The understory trees are used in areas where buildings are close to the parkway, such that the installation of canopy trees would create a likely conflict between the street trees and the nearby buildings.
      3. The trees planted in a landscaped median shall be of a different species from those planted in the parkways. If the parkways are planted with canopy trees, then medians may be planted with understory trees instead of canopy trees.
    2. Location. No street trees other than understory trees are planted under or within five lateral feet of any underground water line, sewer line, transmission line or other utility. The Parish may further limit the species of understory trees that are allowed in these locations to minimize interference with utilities.
    3. Spacing.
      1. Minimum Spacing. No trees may be planted closer than 25 feet together, except that special plantings may be clustered if the cluster does not negatively affect the continuing health of the clustered trees, and the cluster is approved in the landscape plan of the plat or land development.
      2. Maximum Spacing. Street trees shall be spaced not more than 60 feet on center for trees with large canopies (e.g., live oaks), or 40 feet on center for trees with smaller canopies. If the parkway or median is more than 16 feet in width and does not contain open ditch drainage, then canopy trees shall be installed in two rows, with trees staggered, each row spaced not more than 60 feet on-center.
    4. Maintenance. Street Trees required by this UDC shall be maintained by a developer, lot owner, tenant, property owners' association or other entity having a legal interest in the ownership of the subdivision or lots in the subdivision. The entity that is in charge of the maintenance shall be indicated on the landscape plan, and documentation (e.g., covenants, conditions, and restrictions) shall be provided to the Parish that shows the legal obligation of the entity to perform the maintenance.
    5. Replacement. If the Parish or a utility provider must remove trees to access utilities for repair or maintenance, then the developer or property owners’ association shall pay the cost of removal and shall replace the trees within 30 days of the completion of the work unless the Director of Public Works determines that replacement would put utilities at material risk.

    Effective on: 11/1/2013

    Sec. 3.11.3 Landscape Plan, Installation, and Maintenance

  • General.
    1. Compliance with the standards of this Division shall be demonstrated by a schematic landscape plan and a landscape installation and maintenance plan. Collectively, these documents shall be referred to as the "landscape plan."
    2. Landscape plans for nonresidential, mixed-use, and multiple-family development shall be prepared by a registered landscape architect who is licensed to practice in the State of Louisiana.
  • Contents of Schematic Plan. The landscape plan shall include a plan view, drawn to scale, tabular information (e.g., number and species of trees, etc.), and other information (e.g., installation and maintenance measures) deemed necessary by the Director to ensure compliance with the landscape and buffer requirements identified in this UDC.
  • Timing and Installation; Inspections.
    1. Completion of Landscape Improvements. Bufferyard and street tree landscaping must be completed prior to a subdivision plat being recorded, or, if no plat is required, a certificate of occupancy being issued. If this requirement would result in the installation of landscaping during an inappropriate season, then the Parish may:
      1. Allow the plat to be recorded upon condition that security is provided for the installation of the required landscaping during planting season; or
      2. Issue a temporary certificate of occupancy, on the condition that a permanent certificate of occupancy will not be issued unless the required landscaping is installed.
      3. All other landscaping must be installed before issuance of a permanent certificate of occupancy. A temporary certificate of occupancy may be issued if necessary to allow for the planting of landscaping improvements during an appropriate season or weather condition.
    2. Periodic Inspections. The Parish may inspect each site periodically after approval of a subdivision plat or issuance of the certificate of occupancy to ensure compliance with the Division.

    • Effective on: 11/1/2013