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Private Roadway Design Standards -Technical Manual
Administrative Manual | New Hanover County, NC UDO | Updated: Error! Reference source not found. 1 Private Roadway Design Standards Technical Manual 02-2020 Roadway Design Technical Manual | New Hanover County, NC | 02-2020 1 MATRIX TABLE FOR PRIVATE ROAD ROW SPECIFICATIONS ROAD DESIGN STANDARDS Alley Cul-de- sac Local Collector ROW (R) 20 45 45 50 Travelway Width (W) 18 22 24 26 Minimum Horizontal Centerline Radius 55 100 100 200 Minimum Edgeline Radius at Corners N/A 15 25 30 Pavement Design Standard (NCDOT) Local Local Local Collector General Standards: Minimum Offset Between Centerlines of Intersections 200 Tangent Length Between Horizontal Curves 100 Maximum Cul-de-sac Length 500' Plaza Width (between back of curb and sidewalk) 5' Sight Distance Triangle at Intersections 10'x70' Roadway Design Technical Manual | New Hanover County, NC | 02-2020 2 Roadway Design Technical Manual | New Hanover County, NC | 02-2020 3