Federal-aid Highways

Federal-aid highways are defined in Title 23 of the United States Code, section 101: "(5) FEDERAL-AID HIGHWAY." The term 'Federal-aid highway' means a highway eligible for assistance under this chapter other than a highway classified as a local road or rural minor collector.

Local roads and rural minor collectors are among the categories within National Functional Classification (NFC). All NFC categories are shown on the NFC maps

Federal-aid Systems

Federal-aid systems are defined in Title 23, USC, at section 103: "For the purposes of this title, the Federal-aid systems are the Interstate System and the National Highway System."

In Michigan, highways on the Interstate System are shown on the NFC maps - on the map legend, look for "Rural or Urban Interstate."

View more on the National Highway System

Federal-aid Eligible

All federal-aid highways and all roadways which are on either of the two federal-aid systems are federal-aid eligible.

In addition, federal law may define other roadways as eligible for federal-aid. Thus, although rural minor collectors are not defined as federal-aid highways according to Title 23, they are federal-aid eligible under current federal law for some programs.

Contact us for additional information.