(A) Minimum widths. Minimum right-of-way widths and pavement widths (face to face of curb) for each type of public street or road shall be as follows:
Type of Street | Right-of-Way Width | Roadway Width Including Shoulders
|
Collector | 80 feet minimum | 44 feet |
Commercial/industrial street | 80 feet minimum | 44 feet |
Cul-de-sac | 60 feet minimum | 45 foot turnaround radius |
Local street | 60 feet minimum | 32 feet |
Minor arterial | 120 feet minimum | As determined by traffic needs |
(B) Existing street with inadequate width. Where a subdivision abuts or contains an existing street or inadequate width, sufficient additional width shall be provided to meet the above standards.
(C) Additional width. Additional right-of-way and roadway widths may be required to promote public safety and convenience when special conditions require it or to provide parking space in areas of intensive use.
(D) Restriction of access. Access of local streets onto state, county state aid highways and county highways shall be discouraged at intervals of less than 500 feet.
(E) Street jog. Street jogs with centerline offsets of less than 150 feet shall not be allowed.
(F) Deflection. When connecting street lines deflect from each other at any one point by more than ten degrees, they shall be connected by a curve with a centerline radius of not less than 200 feet.
(G) Grades. Centerline gradients shall be at least 0.5% and grades shall not exceed 8%.
(H) Vertical curves. Different connecting street gradients shall be connected with vertical curves. Minimum length, in fact, of these curves shall be 30 times the algebraic difference in the percent of grade of the two adjacent slopes.
(I) Angle of intersection. The angle formed by any intersecting of streets shall not be less than 70 degrees with 90-degree intersections preferred.
(J) Size of intersection. Intersections of more than four corners shall be prohibited.
(K) Corner radii. Roadways of street intersections shall be rounded by a radius of not less than 15 feet. Roadways of alley-street intersections shall be rounded by a radius of not less than six feet. Corners at the entrances of the turn-around portions of the cul-de-sacs shall be rounded by a radius of not less than 15 feet.
(L) Curb and gutter. Curb and gutter shall be included as part of the required street surface improvement and shall thus be designed for installation along both sides of all roadways for urban design.
(Ord. passed - -) Penalty, see § 156.999