Street | Right-of-Way Width | Roadway Width | Radius of Horizontal Curves, Figures to the Centerline | Tangents between Reverse Curves |
Arterial thoroughfare** | 150 feet | ** | ** | ** |
Primary and parkways** | 80 feet | ** | 300 feet | 100 feet |
Secondary** | 60 feet | 33 feet | 200 feet | 40 feet |
Section and half section line | 60 feet | 33 feet | 200 feet | 40 feet |
Local | 50 feet | 27 feet | 150 feet (+) | 40 feet |
Cul-de-sac | 50 feet | 27 feet | 150 feet | 40 feet |
Cul-de-sac turnaround diameter | 100 feet | 73 feet | ||
Marginal access | 40 feet | 25 feet | 150 feet | ** |
Business and industrial districts | 80-100 feet | 53 feet | 500 feet | 200 feet |
Boulevard**, 1/ | ** | 25 feet | 200 feet | 40 feet |
Notes:
*Specifications for roadway construction shall be as specified in this chapter and any other subsequent and applicable county ordinance.
**Minimum standards for these streets shall be as indicated or as determined by the Plan Commission and the County Highway Supervisor.
***Roadway width is as required for curbed streets and indicates distance from each to back of curb.
(+)In instances where a turn of 90 degrees, or near 90 degrees is planned, a lesser radius is acceptable; however, an enlargement of the right-of-way and pavement is required on the outside edge of the street as indicated in the sketch.
1/In the event boulevard-type streets are constructed, provision shall be made in the deed restrictions for the continuous maintenance of the median strip, grassed-area, by the lot owners in the subdivision. This provision shall be stated in a manner which is acceptable to the Commission and the Board.
(Ord. 466, Appendix: Minimum Street Design Standards, passed 5-11-98)