About MDOT

The Michigan Department of Transportation is responsible for all transportation systems and routes statewide that are prefaced by M, US and I. The information on this page highlights key topics that can help motorists understand how MDOT moves people and goods, and how the agency works to improve transportation throughout the state.

For more information about investments and innovations in Michigan’s infrastructure, visit www.Michigan.gov/MDOT.

Blue sign reading 'Official Guide to MDOT' with traffic signal in background.
Construction workers paving a road with machinery and gravel.
A highway at sunset with a blue banner reading 'Fast Facts'.
Wooden blocks spelling 'FAIL' with a blurred background and 'Reality Checks' text.
Police officers standing near a stop sign in an urban area.