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Article 7: Subdivisions25 <br />Section 7.8: Access and Roadways <br />(ii) Culverts shall be kept clear of trash and other obstructions that <br />could prevent or reduce the culverts function. If culverts are not <br />kept clear it will cause runoff to flow over the road and may <br />cause flooding upstream. Ditch banks and bottoms shall be <br />protected from erosion by maintaining good vegetation. <br />(iii) The travelway shall be maintained by grading the surface <br />material to fill any potholes that develop and to evenly spread the <br />surface material where the soil has been uncovered because of <br />erosion. <br />(iv) The road name sign shall be kept visible and legible so that <br />visitors and emergency personnel can easily locate the road. <br />(15) Vertical Clearance <br />A minimum 14 -foot vertical clearance shall be provided above the travelway to <br />permit the passage of large vehicles under power lines and tree limbs. <br />(16) N.C. Department of Transportation Driveway Permit <br />The property owner is responsible for obtaining the required permit for access to <br />the state maintained road. This permit can be obtained from the DOT in <br />Hillsborough. Permits are normally granted on request. <br />(17) Minimum Curve Radius <br />(a) New curves shall be constructed with a minimum centerline radius of <br />125 -feet (see graphic). <br />Figure 7.8.5.D.17.a: <br />Minimum Curve Radius <br />A <br />50' <br />Right of Way <br />r <br />t <br />125' Centerline <br />Curve Radius <br />Right of Way <br />(b) The right -of -way shall be designed with bends that will provide sufficient <br />width to construct the road to the minimum radius. For example, a 90 <br />degree bend in a 50 -foot right -of -way will not provide enough area to <br />construct a road 18 -feet wide. <br />(c) The right -of -way must include sufficient width for the travelway and the <br />necessary shoulders, ditches and slopes. <br />(d) A curve radius of less than 125 -feet may be approved if all of the <br />following conditions are met: <br />Orange County, North Carolina — Unified Development Ordinance Page 7 -25 <br />