§ 90.400.3 INTERSECTIONS.
    (A)   Intersections shall be planned and designed to provide a safe system for present and prospective traffic. Intersections shall be graded to provide positive drainage and shall conform to the alignment and grading requirements of these standards.
   (B)   The following standards shall apply to intersection design:
   DESIGN CONSIDERATION   
 
Approach speed
25 mph
20 mph
Sight distance (Min.)
250 feet
200 feet
 
Grade within 100 feet
0.5% to 2%
4% (max.)
Minimum Angle
75 degrees
75 degrees
Minimum Curb Radius
   Local Streets
25 feet*
30 feet
   Collector Streets
50 feet
50 feet
   Arterial Streets
60 feet
60 feet
Minimum Jogs
   Local Streets
150 feet
150 feet
   Collector Streets
200 feet
200 feet
   Arterial Streets
200 feet
300 feet
* 30 feet where occasional truck traffic expected
 
   (C)   Invert of intersecting streets shall align with the tangent line of the gutter through the intersection with the direction of flow. Note that variable intersection grades require radius grade change point to begin where the tangent of the back of curb intersects the gutter flow line.
   (D)   It is understood that the sight distances listed above are a minimum and that longer sight distances may be required where topography will allow and/or higher speeds are present and/or when streets with a classification of collector or higher are involved.
(Ord. 2009-11-347, passed 11-3-09; Am. Ord. 2010-06-356, passed 6-1-10; Am. Ord. 2018-11-816, passed 11-6-18)