Truck weight limits start on Lower Peninsula highways

The Detroit News
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Truckers hauling loads across Michigan, beware: starting at 12:01 a.m. Friday, weight restrictions are being enforced on all state trunkline highways in the Lower Peninsula to protect roads.

The Michigan Department of Transportation said the restricted areas stretch from the southern Michigan border to the Mackinac Bridge. State routes typically carry M, I, or US designations.

In the restricted areas, there’s a posted weight reduction of 25 percent for rigid pavements and 35 percent for flexible pavements on routes designated as "seasonal.” Those routes are shown in solid or dashed red on the MDOT Truck Operators Map online.

There is no reduction in legal axle weights on routes designated as “all-season routes,” MDOT said.

“All extended permits will be valid for oversize loads in the weight-restricted area on the restricted routes,” the department said in a statement Thursday. “Single-trip permits will not be issued for any overweight loads or loads exceeding 14 feet in width, 11 axles and 150 feet in overall length on the restricted routes.”

For information and updates, call (800) 787-8960 or go to, under “Restrictions.”

Trucking companies in New Jersey and Canada can call (517) 373-6256.

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