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(A) Right-of-way widths.
(1) Right-of-way widths for major thoroughfares, U.S. highways, state primary highways, and state secondary highways shall be designed in accordance with the current standards of the State Department of Transportation.
(2) Under special design conditions approved as a part of a cluster subdivision, or in the case of a short street section with minimum traffic service requirements, the right-of-way for minor residential streets may be reduced, but in no case to less than 40 feet and provided that the agent may require a minimum right-of-way of 50 feet to ensure continuity of the street system and appropriate future subdivision of adjacent properties.
(B) Roadway widths. Roadway pavement widths for all public roads shall be not less than the minimum specified by the State Department of Transportation.
(1) Where the design of the subdivision is approved as a minor subdivision with private streets, the street shall be graded in accord with standards of the State Department of Transportation to provide adequate drainage for a compacted gravel or crushed stone roadway at least four inches in depth and 16 feet in width. No surface treatment is required. A performance bond will be required to ensure proper and complete construction.
(2) Where a cluster subdivision or planned development is approved with a private street or common driveway by the Board of Supervisors, the street or driveway shall be graded to provide adequate drainage for a compacted gravel or crushed stone roadway at least four inches in depth and 14 feet in width. No surface treatment is required. A performance bond will be required to ensure proper and complete construction.
(3) All costs of inspection of drainage and pavement, including employment of an engineer, shall be bourne by the subdivider.
(C) Cul-de-sacs. Cul-de-sac streets shall be terminated by a turnaround having a minimum right-of-way radius of 50 feet and a minimum pavement radius of 35 feet, provided that the agent may approve a “T” or “Y” back-around or other design to facilitate entrance and exit.
(D) Scenic roads. Where an existing or proposed street or roadway is designated as a scenic road, scenic byway, or gateway corridor on the Comprehensive Plan, the purpose and standards established for such roads to maintain their scenic and historic qualities shall be observed in design and development of an adjacent subdivision including, but not limited to, such factors as maintenance of existing alignments and natural vegetation, appropriate pavement design, replanting of vegetation or construction of berms where necessary, and due care with respect to location and design of access points.
(E) Street grades, curvature, and intersections. Street grades, curvature, and intersections shall be designed in accordance with most current standards of the State Department of Transportation.
(Ord. passed 8-10-1989) Penalty, see § 154.999