The following design standards shall be considered minimum requirements and shall specifically apply to residential subdivision. The requirements for nonresidential subdivisions shall be such as the County Board deems appropriate for the type of development and use contemplated, but in no event be less than the requirements of residential subdivisions. These provisions shall apply to both public and private streets.
Figure A | ||||
Classification | Collector | Local Street | Marginal Access | Alleys |
Figure A | ||||
Classification | Collector | Local Street | Marginal Access | Alleys |
Base | Aggregate* | Aggregate 8 in. compacted | Aggregate 8 in. compacted | Aggregate 8 in. compacted |
Earth slope | ||||
Front 0 ft.—10 ft. | 1V:3H | 1V:3H | 1V:3H | Not required |
Back 0 ft.—10 ft. | 1V:3H | 1V:3H | 1V:3H | Not required |
Back over 10 ft. | 1V:2H | 1V:2H | 1V:2H | Not required |
Minimum right-of-way width (feet) | 60 ft. | 50 ft. | 50 ft. | 20 ft. |
Minimum width of surface (feet) | 30 ft. | 24 ft. | 24 ft. | 18 ft. |
Minimum width of base (feet) | 32 ft. | 26 ft. | 26 ft. | 20 ft. |
Minimum width of roadbed (feet) | 36 ft. | 30 ft. | 30 ft. | 18 ft. |
Shoulder slope | 3/4 in. per foot | 3/4 in. per foot | 3/4 in. per foot | Not required |
Surface crown | 1/4 in. per foot | 1/4 in. per foot | 1/4 in. per foot | 1/4 in. per foot |
Type of surface | Bituminous concrete * | A-3 surface treatment | A-3 surface treatment | A-2 surface treatment |
*Thickness of surface and base to be determined by soil type | ||||
(Ord. passed 10-14-2003; Ord. passed 11-10-2003; Ord. passed 11-14-2004; Ord. passed 9-11-2007)