(A) Angle of intersection. The centerline of all streets shall intersect as nearly at a 90-degree angle as possible, but in no case shall the angle of intersection be less than 75 degrees or greater than 105 degrees, unless a special modification is granted by the Planning Commission due to certain exceptional conditions.
(B) Centerline offset of adjacent intersections. Where T-intersections are used, the following minimum centerline offsets of adjacent intersections shall be as follows:
Type of Street | Minimum Centerline Offset of Adjacent Intersections in Feet
|
Collector - collector | 200 |
Local - local | 150 |
Local - subcollector | 150 |
Subcollector - collector | 150 |
(C) Corner radii. Property lines at street intersections shall be provided from the same radius point necessary to establish the pavement radius. If because of certain exceptional conditions a modification is granted permitting an angle of intersection less than 75 degrees, or greater than 105 degrees, then the minimum radii shall be increased or decreased, respectively.
(D) Centerline grades within intersections. Maximum centerline grades within street intersections shall not exceed the grade for through streets, as identified in § 157.080, Table 1, of these regulations, depending on the type of street. The maximum grade of the centerline of the side streets intersecting with the gutter line of the through street shall not exceed 4% for a distance of not less than 75 feet from the centerline for local and subcollector streets and 150 feet for collector streets.
(E) Design adjacent to freeways, expressways, arterials or collectors. The following principles shall be used in the design of subdivisions adjacent to freeways, expressways or arterials.
(1) Street design shall have the purpose of making adjacent lots desirable by cushioning the impact of heavy traffic and of minimizing the interference with traffic on such thoroughfares.
(2) Collector, subcollector and local streets shall not be permitted to intersect with freeways or expressways. The number of intersections with arterial streets shall be held to a minimum. Wherever practicable, such intersections shall be spaced not less than 600 feet apart. In the case of collector streets, intersections with those streets shall be spaced not less than 400 feet apart and access to driveways shall be spaced at intervals of not less than 200 feet. At those access points where turning vehicles to and from the arterial and collector streets will affect the roadway capacity or safety, reserved turn lanes shall be required, wherever practical. Frontage or service roads shall be used when these spacing requirements cannot be met.
(3) Where frontage roads are not required, lots adjacent to such thoroughfares shall, when practical, be served and be accessible only by a street generally paralleling the thoroughfare or by a series of cul-de-sacs or loop streets extending towards the thoroughfare from an internal street system.
(1984 Code, § 157.56) (Ord. O-86-78, passed 8-17-1978)