The design and improvement standards for intersections are suggested minimums for all street intersections in subdivisions. All such intersections shall be designed and constructed in accordance with the following requirements and standards as specified in Table 2.
(a) Multiple intersections involving junctions of more than two (2) streets shall not be permitted.
(b) Proposed streets shall intersect one another as nearly at right angles as possible. No street shall intersect another street at less than sixty (60) degrees unless justified by extreme topographical conditions. In such a case, special provisions as deemed necessary by the Planning Commission and recommended by the Road Commissioner shall be made.
(c) Approach to street intersections shall be straight for a distance of at least one hundred (100) feet from the centerline of the street intersected.
(d) Street jogs shall be discouraged. Where such jogs are unavoidable, in no case shall the centerline offsets be less than one hundred fifty (150) feet.
(e) Intersections of the street right-of-way lines shall be rounded with a minimum radius of thirty (30) feet for residential street intersections and fifty (50) feet at commercial and industrial street intersections. The minimum radius shall be increased when the smallest angle of intersection is less than sixty (60) degrees.
Table 2: Intersection Design Standards for All Streets | |||
Street Classification | Local | Collector | Arterial |
Maximum Approach Speed (mph) | 35 | 35 | 35 |
Clear Sight Distance (ft. length along each approach leg) | 90 | 90 | 70 |
Maximum Grade at Intersection | 5% | 3% | 3% |
Minimum Angle of Intersection | 60° Degrees | ||
Minimum Edge of Pavement Radius (ft.) (1) Local - Local (2) Local - Collector (3) Collector - Collector (4) Collector - Marginal Access - Arterial (5) Commercial and Industrial | 30 - All Classes 30 - All Classes 40 - All Classes 50 - All Classes 50 - All Classes | ||
Minimum Centerline Offset of Adjacent Intersection (ft.) (1) Local - Local (2) Local - Collector (3) Collector - Collector (4) Collector - Marginal Access - Arterial | 150 - All Classes 200 - All Classes 300 - All Classes 1320 - All Classes | ||
(Ord. 56-2005. Passed 10-3-05.)