(A) Streets: Streets shall conform minimally to the requirements of the standard specifications incorporated by reference in this UDO and other conditions set forth by the Village Board. All proposed subdivisions shall conform to the street classification plan. Whenever a tract to be subdivided embraces any part of a regional major or minor arterial, so designated on the street classification plan, such part of such proposed public way shall be platted and dedicated by the subdivider in the location and of the width indicated on the street classification plan, or in conformance with Illinois Department of Transportation standards, where applicable.
1. Location And Arrangement:
(a) The proposed subdivision shall conform to the various elements of the Comprehensive Plan and shall be considered in relation to the existing and planned arterials, collector and local streets, and such streets shall be platted and dedicated in the location and the width indicated on such plan.
(b) The street layout shall provide for continuation of collector streets in adjoining subdivisions, and/or for the proper projection of streets when adjoining property is not subdivided.
(c) The street layout shall include local streets so laid out that their use by through traffic shall be discouraged.
(d) Should a proposed subdivision border on or contain any existing or proposed arterial, the Plan Commission may require reverse frontage with screen planting contained in a non-access easement along the rear property line, or such other treatment as may be necessary for adequate protection of residential properties and to afford separation and reduction of traffic hazards.
(e) Should a proposed subdivision border on or contain a tollway, expressway or other limited access highway right-of-way, including, but not by the way of limitation, I-55, U.S. Route 83 and 75th Street, the Village Board may require the location of a frontage road approximately parallel to and on each side of such right-of-way at a distance suitable for the development of any appropriate use of the intervening land such as for parks in residential districts. Such distances shall be determined with due consideration of the minimum distance required for approach grades to future grade separations.
(f) Half streets shall be prohibited.
(g) Private streets may be permitted subject to the review by the Plan Commission and approval by the Village Boards. Such streets shall be constructed in conformance with the standard specifications and shall be further subject to all other terms of this UDO.
2. Right-Of-Way And Easement Widths: Street right-of-way widths shall conform minimally to the following requirements:
3. Cul-de-Sacs: Rights-of-way for cul-de-sacs shall conform minimally to the following requirements. Cul-de-sac length shall be measured as the distance, measured along the centerline of the cul-de-sac, beginning at the edge of pavement of the connecting streets to the furthest edge of pavement of the cul-de-sac ball.
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Right-of-Way Width | 60 feet | 60 feet | 60 feet |
Easement Width | n/a | n/a | 20 feet |
Total Width | 60 feet | 60 feet | 60 feet |
Maximum Length | 500 feet | 250 feet | 250 feet |
Minimum Radius | 60 feet | 60 feet | 80 feet |
4. Street Grades: For adequate drainage, the minimum street grade shall not be less than five-tenths of one percent (0.5%). The maximum street grade shall be five percent (5%) for all arterial and collector streets and seven percent (7%) for all local and cul-de-sac streets.
5. Minimum Radii Of Curvature On The Centerlines: Curvature measured along street centerlines shall have the following minimum radii:
(a) Arterials: A minimum radius of one thousand (1,000) feet.
(b) Collector Streets: A minimum radius of three (300) hundred feet.
(c) Other Streets: A minimum radius of two hundred fifty (250) feet.
6. Tangents: Between reverse curves there shall be not less than a minimum tangent for:
(a) Arterials: Three hundred (300) feet.
(b) Collector Streets: One hundred (100) feet.
(c) Other Streets: Fifty (50) feet.
(a) All residential street intersections shall have a minimum curb return radius of twenty-five (25) feet. All other residential and nonresidential street intersections shall have a minimum curb return radius of forty (40) feet.
(b) At all street intersections with arterials and collector streets, an easement shall be established within the triangular area formed at the intersection of any street right-of-way lines by a straight line drawn between said right-of-way lines at a distance along each line of twenty-five (25) feet from their point of intersection.
(c) At alley intersections, the curbs and paving shall be rounded by an arc of at least twenty-five (25) feet in radius.
(d) All streets intersecting an arterial or collector street shall do so at right angles or as nearly as possible. Intersection angles of less than sixty (60) degrees shall not be permitted.
(e) Curved streets, intersecting with arterials and streets, shall do so with a tangent section of centerline fifty (50) feet in length measured from the right-of-way line of the arterial or collector street.
8. Street Jogs: Any street which jogs with arterials, collectors or nonresidential streets with centerline offsets of less than two hundred twenty-five (225) feet shall not be permitted; any street which jogs between other residential streets with centerline offsets of less than one hundred twenty five (125) feet shall not be permitted.
9. Grading And Centerline Gradients: Different connecting street gradients shall be connected with vertical parabolic curves. Minimum length in feet of these curves shall provide a stopping sight distance of not less than three hundred (300) feet.
10. Acceleration-Deceleration Lanes: Streets which intersect with arterial or collector streets shall be provided with paved acceleration and deceleration lanes and passing lanes on both sides of the roadway. Such lanes shall be provided in keeping with the standards approved, from time to time, by resolution by the President and Village Boards for this type of improvement.
(B) Blocks: Blocks within subdivisions shall conform to the following standards:
(a) Maximum length for blocks in residential subdivisions shall not exceed eight hundred (800) feet in length, except where in the opinion of the Village conditions may justify a greater distance.
(b) Maximum length for blocks in nonresidential or mixed-use subdivisions shall not exceed one thousand two hundred (1,200) feet in length, except where in the opinion of the Plan Commission conditions may justify a greater distance.
(c) Widths of blocks shall be determined by the condition of the layout and shall be suited to the intended layout.
(a) Location of public walkways or crosswalks may be required by the Plan Commission to obtain satisfactory pedestrian access to private and public facilities such as, but not limited to, schools and parks, and where blocks exceed nine hundred (900) feet in length.
(b) Easements for public walkways shall be at least twelve (12) feet in width. Pavement shall be designed and constructed in conformance with standard specifications adopted, from time to time, by resolution of the Village Boards. Typical cross sections of this easement shall be provided.
(a) Utility easements along right-of-way lines shall be provided as required in
Table 9-7-03(A)(3).
(b) Drainage and utility easements shall be provided as follows:
(1) Interior Rear Yards: Ten (10) feet.
(2) Peripheral Rear Yards: Twenty (20) feet.
(3) Interior Side Yards With Utilities: Ten (10) feet.
(4) Peripheral Side Yards: Ten (10) feet.
(5) Peripheral Side Yards With Utilities: Twenty (20) feet.
(6) Interior Side Yards: Five (5) feet.
(c) In cases where the subdivider can demonstrate that additional easement areas are adjacent to the subject property, which are located within the Village corporate limits, and which grant proper easement rights to the Village, the subdivider may, at the sole discretion of the Village, be allowed to reduce easement areas. In no case shall easement areas on any property be reduced below five (5) feet.
(d) Recommendations on the proposed layout of telephone and electric company easements should be sought from all of the utility companies serving the area. It shall be the responsibility of the subdivider to submit copies of the approved preliminary plat to all appropriate public utility agencies.
4. Lots: Lots within subdivisions shall conform to the following standards:
(1) The lot size, width, depth and shape in any subdivision proposed for residential uses shall be appropriate for the location and the type of development contemplated.
(2) Lot areas and widths shall conform to at least the minimum requirements of the UDO for the Zoning District in which the subdivision is proposed.
(3) Building setback lines shall conform to at least the minimum requirements of the UDO.
(4) Excessive lot depth in relation to width shall be avoided. A depth to width ratio of three to one (3:1) shall normally be considered a maximum.
(5) Through lots having frontage on two (2) parallel streets are discouraged and shall only be permitted in circumstances where the Village Board determines that the health, safety and general welfare of the affected public will not be adversely impacted.
(1) Every lot shall front on a street.
(2) Side lot lines shall be at right angles or radial to the street lines.
(3) Streets and lots shall be arranged, to the extent possible, so as to assure that dwellings do not face rear or side yards of lots across streets wherever possible. Where such lot relationships are permitted to exist, through lots shall be screened from the street by berms or intensive and obscuring landscaping.
5. Natural Environmental Features: The natural environmental features and character of lands shall be preserved wherever possible. Due regard must be shown for all natural features such as large trees, natural groves, watercourses and similar community assets that will add attractiveness and value to the property, if preserved. The preservation of drainage and natural stream channels shall be considered by the subdivider and the dedication and provision of adequate barriers where appropriate, shall be required. (Ord. 23-0-05, 1-23-2023)