Federal Functional Classification is the system by which roads are grouped into functional systems according to the type of service and amount of traffic the facility carries. Functional Classification is used to determine design standards of roads and determines Federal Aid funding eligibility. Federal Functional Classification is assigned to all public roads using federal guidelines and is approved by FHWA.Federal Aid Eligibility
show the official Federal Functional Classification.
Federal Aid eligible roads include roads federally designated as:
Map 21, Functional Class, & NHS
- Major collector
- Minor arterial
- Principal arterial
2010 Statewide Federal Aid Urban Boundary and Functional Classification Review For information about the Historic 2000 Functional Class Review