MDOT 2022 Spring Weight Restrictions Bulletin #6

Effective 6:00 am Monday, April 4, 2022 weight restrictions will be lifted on all state trunk line highways from the southern Michigan border north to and including M-46 in Muskegon County at the US-31BR intersection in the City of Muskegon Easterly to US-131 North to M-46 then continuing East on M-46 to Port Sanilac, Sanilac County ending at the M-25 intersection.  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 M-46 line.

Weight restriction information and updates may be obtained by calling 1-800-787-8960. For companies located in Canada and New Jersey, information may be obtained by calling 517-373-6256.

On routes designated as “All Season Routes” (green and 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.

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 Please refer to MDOT Truck Operators Map for route designations.

Spring Weight Restrictions Bulletins

To check the status of any current restrictions on county jurisdiction roadways click here.

If you have any questions, please contact Glenn Bukoski at, or Rachelle VanDeventer at, or call them at the MITA office at 517-347-8336.