Be aware of fake MDOT texts demanding toll or traffic ticket payments. MDOT does not operate any toll roads. Contact the Michigan Attorney General for information on how to identify scams and file a complaint.
Federal-aid highways
Legacy federal-aid systems maps
The county maps show the old federal aid systems created by the Federal-aid Highway Act of 1970 and the Surface Transportation Act of 1978. This system was replaced by the Intermodal Transportation Efficiency Act of 1991; which started the National Functional Class (NFC) designation system.
Alger
Allegan
Alpena
Antrim
Arenac
Baraga
Barry
Bay
Benzie
Berrien
Branch
Calhoun
Cass
Charlevoix
Cheboygan
Chippewa
Clare
Clinton
Crawford
Delta
Dickinson
Eaton
Emmet
Genesee
Gladwin
Gogebic
Grand Traverse