(A) Minimum right-of-way widths and pavements widths (face to face of curbs) for each type of public street or road shall be as follows:
Type of Street | Right-of-Way Width | Roadway Width |
Type of Street | Right-of-Way Width | Roadway Width |
Alleys (where permitted) | 40 ft. | 20 ft. |
Collector street | 80 ft. | 44 ft. |
Commercial or industrial service street | 60 ft. | 40 ft. |
Cul-de-sac | 60 ft. | 30 ft. |
Cul-de-sac turnaround | 60-ft. radius | 45-ft. radius |
Marginal access street | 60 ft. | 30 ft. |
Minor street | 60 ft. | 30 ft. |
Thoroughfare | 120 ft. | As determined by traffic needs |
(B) Where a subdivision abuts or contains an existing street of inadequate width, a sufficient additional width shall be provided to meet the above standards.
(C) 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) Extensions of existing streets with lesser right-of-way than prescribed above, may be permitted by variance in special cases.
(E) Access of minor streets onto state and county state aid highways, shall be discouraged at intervals of less than 500 feet.
(F) Street jogs with center line offsets of less than 150 feet shall not be allowed.
(G) 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 radius of not less than 100 feet.
(H) Center line gradients shall be at least 0.4% and shall not exceed the following:
Classification | Gradient (in Percent) |
Thoroughfares and collector streets | 5 |
Minor and service streets | 8 |
(I) Different connecting street gradients shall be connected with vertical curves. Minimum length, in feet, of these curves shall be 20 times the algebraic differences in the percent of grade of the two adjacent slopes.
(J) The angle formed by an intersecting of streets shall not be less than 75 degrees, with 90-degree intersections preferred.
(K) Intersections of more than four corners shall be prohibited.
(L) 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 6 feet. Corners at the entrances to the turnaround portions of cul-de-sacs shall be rounded by a radius of not less than 15 feet.
(Ord. 179, passed 2-16-78; Am. Ord. 240, passed 8-12-82)