Effective Wednesday, May 1, 2019 at 6:00 am, weight restrictions will be lifted on all state trunkline highways from the southern Michigan border north to and including US-2 from Iron Mountain to St. Ignace. Frost restrictions are still in effect for the remainder of the state and will be imposed and enforced on all state trunkline highways north of this line and M-185 on Mackinac Island.
State trunkline highways typically carry M, I, or US designations.
Weight restriction information and updates may be obtained by calling 1-800-787-8960.
For companies located in Canada or New Jersey, information may be obtained by calling 517-373- 6256.
Click here to view MDOT Spring Weight Restriction Bulletins.
To check the status of any current restrictions on county jurisdiction roads, click here.