Effective Monday, April 12, 2021, 6 a.m., weight restrictions will be lifted on all state trunkline highways from the southern Michigan border north to and including US-2/US-141 at the Menominee River bridge west of Iron Mountain, then east on US-2 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 US-2 and M-185 on Mackinac Island. State trunk line highways typically carry M, I or US designations. 
On routes designated as “All Season Routes” (green & 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 reduction of 25% for rigid pavements and 35% for flexible pavements.
Owner-operators and freight agents, be aware that extended permits will be valid for oversize only in the weight restricted area.
Single trip permits will not be issued for overweight 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 Please refer to MDOT Truck Operators Map for route designations.
View All Spring Weight Restrictions
Stay up-to-date on all Spring Weight Restrictions in Michigan here:
https://mdotjboss.state.mi.us/
Questions? Contact NHH Services
NHH Services’ Safety Team is committed to keeping our owner-operators and freight agents up-to-date with spring weight limits, frost laws and more important updates that may affect travel, including oversize travel. For questions about this or driver safety, give us a call at 765-650-4164.
