In the layout of streets, the subdivider shall comply with the following.
(A) Streets shall be coordinated with the existing street system and provision shall be made for continuity of principal streets as appropriate.
(B) Where, in the opinion of the Planning Commission, it is desirable to provide for future street access to adjoining unsubdivided property, proposed streets shall be extended to the boundary of such property. Where one or more lots front on any such street extension, a temporary turnaround shall be provided.
(C) Local streets shall be so laid out that their use by through traffic will be discouraged.
(D) All dead-end streets, or cul-de-sac, shall terminate in a turnaround having a minimum right-of-way diameter of 100 feet.
(E) Less than full-width streets shall not be permitted, and boundary streets along the edge of the tract shall not be permitted unless required to provide right-of-way for streets and arterials designated by an official major street plan.
(F) Where land in a proposed subdivision is adjacent to a major arterial highway, the Planning Commission may require marginal access streets, reverse frontage with screen planting contained in a non-access reservation along the rear property line, or such other treatment as may be necessary for protection of residential properties and to afford separation of through and local traffic.
(G) Alleys may be required at the rear of lots used for commercial and industrial purposes. In general, alleys shall not be platted in residential blocks unless the need for them can be demonstrated to the Planning Commission.
(H) In general, streets shall be planned in harmony with existing topography. Street grades shall be kept below 10% where practicable, and in no case shall exceed 12%. Minimum grade for all streets shall be 0.5% for drainage.
(I) The horizontal and vertical alignment of all streets shall conform to standards approved by the Commonwealth Department of Highways and Transportation. In no case shall a street have a curve radius of less than 100 feet, measured to the centerline.
(J) A tangent of at least 200 feet shall be provided between reverse curves on arterial streets, and 100 feet on collector streets.
(K) Streets shall intersect at right angles or as nearly as practicable. In no case shall the angle of intersection be less than 75 degrees, unless approved by the Planning Commission upon recommendation of the resident engineer for an unusual condition of terrain.
(L) Street jogs or offsets at intersections shall be avoided.
(M) Intersections with an arterial street shall be at least 1,000 feet apart, measured from centerline to centerline.
(N) Property lines at street intersections shall be rounded with a radius where the Planning Commission determines such to be desirable for reasons of safety.
(O) In cases where State Department of Highways and Transportation specifications are lacking or are less restrictive than the requirements of this chapter, this chapter shall prevail; otherwise, the Highway Departments’ specifications will prevail.
(P) The roadway shall be graded to 30 feet exclusive of side ditches. Base for the roadway shall be at least (dependent upon existing and projected traffic volumes) 30 feet in width and six inches in depth and be of stone, gravel or other satisfactory material approved by the State Department of Highways and Transportation. The pavement width will be a minimum of 24 feet. The surface shall be prime and double seal or equivalent thickness of plant-mixed bituminous concrete.
(Q) Proposed streets which are obviously in alignment with other already existing and named streets, shall bear the names of the existing streets. In no case shall the names of proposed streets duplicate existing street names irrespective of the use of the suffix street, avenue, boulevard, drive, way, place, land or court. Street names shall be indicated on the prehminary and final plats, and shall be approved by the Administrator. Names of existing streets shall not be changed except by approval of the governing body.
(R) A cross-section showing the proposed street construction, depth and type of base, type of surface and the like.
(S) A profile or contour map showing the proposed grades for the streets and drainage facilities including elevations of existing and proposed ground surface at all street intersections and at points of major grade change along the centerline of streets together with proposed grade lines connecting therewith.
(T) A profile on contour map showing the proposed grades for the streets and drainage facilities including elevations of existing and proposed ground surface at all street intersections and at points of major grade change along the centerline of streets together with proposed grade lines connecting therewith.
(1996 Code, § 143-9)