(a) Proposed streets shall be properly related to City, County and State road and highway plans which have been prepared and officially adopted.
(b) Streets shall be logically related to the topography so as to produce usable lots at reasonable grades.
(c) Local streets shall be so laid out as to discourage through traffic.
(d) Where a subdivision abuts or contains an existing or proposed primary street, the Commission may require a marginal access road, reverse frontage, or other treatment which will provide protection for abutting properties, reduce the number of intersections, and separate local and through traffic.
(e) Half streets shall be prohibited except to complete an existing half street.
(f) Maximum Allowable Grades:
Arterial | 7 percent |
Collector | 10 percent |
Local | 15 percent |
(g) Minimum crown grades on all streets shall not be less than 0.50 percent.
(h) Vertical curves shall be installed at all street grade changes exceeding one percent.
(i) Minimum centerline radius for horizontal curves shall be in accordance with the current policies of the West Virginia State Road Commission and related to the design speed of the facility of which it is a part.
(j) Minimum street right-of-way cartway widths shall be as follows:
Type of Street | Type of Development | Cartway | Right-of-way (feet) |
Local | Single-family lots | 20 | 40 |
Collector | Single-double or multi-family lots | 24 | 50 |
Commercial or industrial lots | 30 | 50 | |
Arterial | All types | As prescribed by the State Commissioner of Highways | |
(k) Cul-de-sacs are permitted where the length does not exceed 500 feet and where a turnaround with a roadway diameter of 80 feet and a right-of-way of 100 feet is provided. A suitable turnaround may be required by the Planning Commission when a street is temporarily dead ended over 150 feet from its nearest intersection.
(l) Street Intersections:
(1) All curbs at intersections shall be rounded by a minimum radius of 20 feet for collector and primary streets and 15 feet for minor streets.
(2) Where the grade of any street at the approach to an intersection is to exceed 5 percent, a level area shall be provided with a transitional grade not to exceed 2 percent for a distance of 50 feet from the nearest right-of-way line of the intersection.
(3) Four-way intersections shall be the most complex intersections permitted.
(4) Streets shall be laid out so as to intersect as nearly as possible at right angles. Minimum street intersection angles shall be 60 degrees.
(m) Street Offsets of less than 150 feet are to be avoided.
(n) Reverse Curves shall have a minimum tangent between them of:
Local Streets | 100 feet |
Collector Streets | 150 feet |
Arterial Streets | As prescribed by State Commissioner of Highways |
(o) Alleys:
(1) Not permitted in residential areas.
(2) Mandatory in commercial and industrial areas unless waived by Commission.
(3) Alley shall have a minimum cartway width of 20 feet.
(4) Maximum alley grade shall be 10 percent.
(Ord. 9-3-68.)