1) Residential Access Street: Lowest order of residential streets. Provides frontage for access to lots, and carries traffic having destination or origin on the street itself; designed to carry the least amount of traffic at the lowest speed; all, or the maximum number of housing units, shall front on this class of street.

 

 

   2) Residential Subcollector Street: Middle order of residential streets. Provides frontage for access to lots, and carries traffic of adjoining residential access streets; designed to carry somewhat higher traffic volumes with traffic limited to motorists having origin or destination within the immediate neighborhood; is not intended to interconnect adjoining neighborhoods or subdivisions and should not carry regional through traffic.

 

 

   3) Residential Collector Street: Highest order of residential streets. Conducts and distributes traffic between lower order residential streets and higher order streets/arterials and expressways; carries the largest volume of traffic at high speeds; function is to promote free traffic flow; therefore, parking and direct access to homes from this level of street should be prohibited; collectors should be designed so that they cannot be used as shortcuts by non-neighborhood traffic.

 

 

   4) Arterial Street: A higher order, interregional road in the street hierarchy. Conveys traffic between centers; should be excluded from residential areas.

 

 

   5) Special Purpose Streets:

      a) Rural Residential Lane: A street serving a very low density area (minimum 2 acre zoning); the maximum ADT level limits the number of single-family homes on this road to twenty (20).

 

 

      b) Cul-De-Sac Street: A street with a single means of ingress and egress and having a turnaround. Design of turnaround may vary; cul-de-sacs shall be classified and designed according to anticipated ADT level; a residential access cul-de-sac will have a maximum ADT level of two hundred fifty (250), and a subcollector cul-de-sac will have a maximum ADT level of five hundred (500).

 

 

      c) Marginal Access Street: A service street that runs parallel to a higher order street and provides access to five hundred (500) abutting properties and separation from through traffic; may be designed as residential access street or subcollector according to anticipated daily traffic.

 

 

      d) Divided Streets: Streets may be required to be divided in order to provide alternate emergency access, to protect environmental features, or to avoid grade changes. Design standards should be applied to the combined dimensions of the two (2) street segments as required by the street class.

 

 

      e) Stub Street: A portion of a street which has been approved in its entirety; permitted as part of phase development; may be required if part of an overall master plan.

 

 

(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)

 

Notes:

   1.   See section 8-17-1-1 of this chapter for definition of street hierarchy and subsection 8-6-3-4C2 of this title for definition of low, medium, and high intensity of development.

   2.    Pavement and right of way widths of cul-de-sac stems and right of way requirements shall conform to standards of either residential access or subcollector streets as dictated by anticipated average daily traffic. Cul-de-sac turnarounds shall have a minimum pavement radius of 50 feet. Minimum cul-de-sac right of way radius shall be 60 feet with pavement curbs and 70 feet with roadside swales. Alternative type turnarounds may be considered in very low traffic situations.

   3.    Pavement and right of way widths of marginal access streets and right of way requirements should conform to the standards of either residential access or subcollector streets as dictated by anticipated daily traffic. If the classification is a subcollector requiring a 36 foot pavement, pavement width may be reduced to 28 feet since frontage is restricted to one side of the street.

   4.    Pavement and right of way widths of divided streets and right of way requirements should conform to the standards of street classification as dictated by anticipated average daily traffic and be applied to aggregate dimensions of the 2 street segments.

   5.    Pavement and right of way widths of stems and right of way requirements should conform to the standards of street classification as dictated by anticipated daily traffic.

   6.    Pavement width measured from edge to edge of surface or when curbs are present, from back to back of curb.

   7.    Curbs may also be required as indicated in subsection 8-6-3-4D1b of this title.

   8.    Pavement width assumptions - street parking and direct access (driveways) to lots and buildings are prohibited.

   9.    Use of shoulders is allowable only when: 1) note 8 conditions are met; and 2) sidewalk requirement is waived, street right of way is increased to provide space for sidewalks and drainage swales or sidewalks are provided outside of the street right of way.

   10.    Sidewalks or paved paths may be required in specific situations depending on probable pedestrian traffic and proximity of and need for access to schools, shopping and other facilities.

   11.    Shoulders shall consist of the following widths of aggregate and earth material:

 

 

(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)

 

Notes:

   (1)    "A" = algebraic difference in grades (percent).

   (2)    Collector radius based on 40 mph and no super elevation. Radius may be reduced if design speed is reduced and/or super elevation is provided.

   (3)    Minimum grade for streets with curb and gutter edging. Minimum grade for streets with shoulder edging and drainage swales may be a 0.0 percent grade.

(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)

FIGURE 1
RESIDENTIAL ACCESS STREET

FIGURE 2
RESIDENTIAL SUBCOLLECTOR STREET

   (1)   Widths of high intensity development streets vary according to allowable on street parking conditions. See section 8-17-1-2 of this chapter.

   (2)   Parkway width varies according to street width.

   (3)   Base course thickness dependent on design traffic volume.

FIGURE 3
RESIDENTIAL COLLECTOR STREET

FIGURE 4
COMMERCIAL/INDUSTRIAL ACCESS STREET

   (1)   Assumes no on street parking. If parking allowed, increase pavement width to 32 feet and right of way to 80 feet.

   (2)   Required pavement section based on ADT = 400 with SU and MU trucks = 10% each. If traffic volumes or truck percentages are more than these base amounts, increase the pavement structure section to suit the traffic conditions.

   (3)   An equivalent stabilized base (asphalt, cement or BAM) may be used instead of the aggregate base indicated.

(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)

FIGURE 1
TYPICAL DRIVEWAY CONNECTIONS

Notes:

   1.    Culvert diameter shall be as required by local drainage conditions. Minimum size shall be 12 inch diameter.

   2.    Culverts shall be of concrete, corrugated metal or plastic pipe material as specifically approved by the governing county or township highway department. Headwalls will not be allowed.

   3.    Culvert length shall be sufficient to provide for the established driveway width, 2:1 shoulders and 3:1 side slopes.

   4.    Driveways shall be sloped to a low point over the street swale culvert unless the existing swale is too shallow and cannot be regraded to an adequate depth.

   5.    Driveway radius requirements shall be dependent on specific street and driveway dimensions and traffic conditions. In some cases, a turning lane may be required.

   6.   Driveway pavement materials and thickness (minimum requirements) within the street right of way shall be as follows:

Residential: 12 inches of aggregate base material or 2 inches of bituminous concrete with 6 inches of aggregate base or 4 inches of aggregate base material with 5 inches of concrete and wire mesh.

Nonresidential: 4 inches of aggregate subbase, 9 inches of bituminous base course, 21/2 inches bituminous binder course, and 11/2 inches bituminous surface course or 4 inches of aggregate base with 6 inches of concrete and wire mesh.

Concrete driveways should extend no closer than 3 feet from the edge of the public road or street pavement. Bituminous concrete shall then be used to pave the remaining driveway to the edge of the road.

FIGURE 2

FIGURE 3

(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 06-020, 11-14-2006; Ord. 10-001, 1-12-2010; Ord. 2014-006, 4-8-2014)

   A.   Preliminary Plats:

      MUNICIPAL PLANNING COMMISSION APPROVAL

      STATE OF ILLINOIS   )

                  (signature)   

      COUNTY BOARD CERTIFICATE

      STATE OF ILLINOIS   )

      ZONING BOARD OF APPEALS CERTIFICATE

      STATE OF ILLINOIS   )

   B.   Final Plat:

      CERTIFICATE INDICATING PROXIMITY TO MUNICIPALITIES

               (signature)   

               (signature)   

      OWNER'S CERTIFICATE AND NOTARY CERTIFICATE

         OWNER'S CERTIFICATE

      STATE OF ILLINOIS   )

                     (Seal)

                     (Seal)

         NOTARY CERTIFICATE

      STATE OF ILLINOIS   )

                              

   COUNTY ENGINEER

      ROAD COMMISSIONER'S CERTIFICATE    AND NOTARY CERTIFICATION

      SURVEYOR'S CERTIFICATE

      STATE OF ILLINOIS   )

      CERTIFICATE REGARDING FLOOD HAZARD

               (signature)   

               (signature)   

            CERTIFICATES REGARDING MONUMENTS

            LOCAL HEALTH DEPARTMENT CERTIFICATE

                  (signature)   

            COUNTY CLERK'S CERTIFICATE

      STATE OF ILLINOIS   )

            ZONING BOARD OF APPEALS CERTIFICATE

      STATE OF ILLINOIS   )

                  Zoning Board of Appeals

            CERTIFICATE OF SPECIAL ASSESSMENTS

   STATE OF ILLINOIS   )

            COUNTY BOARD CERTIFICATE

      STATE OF ILLINOIS   )

                         

(Ord. 2018-012, 6-12-2018)