Effective 6:00 AM Monday, March 31st, 2025 weight restrictions will be lifted on all state trunkline highways from the southern Michigan border north to and including the following route beginning on M-20 at the US-31 intersection near New Era then east on M-20 to the US-131 Interchange in Mecosta County then North on US-131 to the south US-131BR/M-20 interchange in Big Rapids, then east on M-20 to the US-10 interchange in Midland County then east on US-10 continuing to M-25 to the M-15 intersection in Bay City, then south on M-15 to the M-46 intersection in Tuscola County then east on M-46 ending at the intersection of M-46 and M-25 in Port Sanilac.
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 the routes stated above.
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 517-335-0023.
– On routes designated as “All Season Routes” (green or gold on the MDOT Truck Operators Map) there will be no reduction in legal axle weight.
– On routes designated as “Seasonal” (solid or dashed red on the MDOT Truck Operators Map) there will be a weight reduction of 25% for rigid pavements and 35% for flexible pavements.
Extended permits will be valid for oversize only in the weight restricted area.
Single trip permits will not be issued for overweight loads or loads exceeding 14 feet in width, 11 axles and 150 feet in overall length in the weight restricted area.
Detailed Weight Restriction information may be obtained by linking to www.michigan.gov/truckers.
(Once updated a map can be found at the above link by clicking on the “Restrictions and Conditions” tab and clicking on the “Spring Weight Restrictions Map” link)
Please refer to the MDOT Truck Operator’s Map for route designations.
Spring Weight Restrictions Bulletin:
https://mdotjboss.state.mi.us/APSWB/SWBHome.htm?bulletin=weight
To check the status of any current restrictions on county jurisdiction roadways click here.
If you have any questions, please contact any member of the MITA engineering team:
Rachelle VanDeventer | rachellevandeventer@thinkmita.org
Jeremiah Leyba | jeremiahleyba@thinkmita.org
They can also be reached by phone at the MITA office: 517-347-8336.
