Michigan state highway frost laws (MDOT)
Seasonal weight restrictions on Michigan’s state trunkline highways
MDOT, the Michigan Department of Transportation, sets seasonal weight restrictions on the state trunkline highways: the I-, US- and M- routes. It puts them on and lifts them for parts of the state at a time as the ground thaws, separately from the county road agencies.
County roads follow their own county’s restrictions. Find the county on the Michigan list.
Below is the latest status ThawWatch has read from the agency, with the time the agency gave for it. ThawWatch can text you when it changes.
Current status
Checking the latest report for Michigan state highways (MDOT)…
Always confirm with the road agency before you travel.
Get a text when Michigan state highways (MDOT) changes
ThawWatch texts you when restrictions go on or come off here, and anywhere else you follow.