Details on all of the state trunklines and their history, plus other highway facts.
Michigan State HighwaysMichigan Highways: The Great Routes of the Great Lakes State
2024-07-19
Dedicated to the past, present and future of the Michigan State Trunkline system as well as other highways and routes throughout the Great Lakes State. This website is intended to be a clearinghouse of information on Michigan's highways, from easily-recognized facts to the little-known trivia. It is also meant to change as the state trunkline system changes.