Search results with tag "Fhwa guidelines"

Drainage and Stormwater Management

FHWA guidelines. FHWA policy includes the following: ... Functional Classification Pipe Culverts Storm Drains Roadside Ditches Median Drains Interstate, Freeways and Expressways 50 10 2 50 50 Arterials 50 10 2 25 25 2 Collectors 50 …

  Guidelines, Classification, Functional, Fhwa, Functional classification, Fhwa guidelines