42-105. Road Drainage and Culverts

Road drainage structures, ditches, and culverts shall be designed and constructed in accordance with State Road Standards and with sufficient depth and width to carry the expected volume of stormwater runoff. Culverts may be required where the road crosses streams or minor watercourses. Best Management Practices should be utilized for road swales (turf matting and vegetation, etc.) to control erosion and transport of sediment and to filter pollutants from stormwater runoff.