(A) Minimum right-of-way widths.
(1) Major thoroughfares. As indicated on Master Plan and as required by the County Road Commission for County Roads;
(2) Local subdivision streets. Sixty feet;
(3) Neighborhood collector streets. Eighty-six feet;
(4) Boulevard streets. Eighty feet;
(5) “U” streets. One hundred twenty feet, terminating in a circle 120 feet in diameter;
(6) Cul-de-sac streets. Sixty feet, terminating in a circle 120 feet in diameter;
(7) Marginal access streets. Forty feet, abutting thoroughfare right-of-way; and
(8) Alley. Twenty feet.
(B) Grades.
(1) Maximum. All streets, 5%; provided, that where essential to reasonable development,7% may be permitted for collector and minor streets; and
(2) Minimum. Forty hundredths percent (0.40%).
(C) Vertical alignment.
(1) Major thoroughfares. Minimum sight distance, 600 feet, measured on and four feet above street centerline; and
(2) All other streets. Minimum sight distance, 300 feet, measured as in above.
(D) Horizontal alignment.
(1) When tangent centerlines deflect from each other more than ten degrees and less than 90 degrees, they shall be connected by a curve with a minimum radius of:
(a) Collector streets. Three hundred feet; and
(b) Minor streets. One hundred fifty feet.
(2) Between reverse curves there shall be a minimum tangent distance of 100 feet;
(3) Streets intersecting a major thoroughfare shall do so at a 90-degree angle; and
(4) Minor streets intersecting a collector street or major thoroughfare shall have a tangent section of centerline at least 50 feet in length measured from the right-of-way line of the major street; provided, that no such tangent is required when the centerline of the minor street has a curve radius greater than 400 feet with curve center located on the right-of-way line of the major street.
(1984 Code, § 6-02-04-030) (Ord. 11, passed 8-26-1969)