As temperatures rise and frost leaves the ground, Wisconsin enforces Spring Thaw Restrictions to protect roadways from damage caused by heavy loads. These restrictions impact oversize and overweight travel.
This guide explains when the restrictions start, what roads are affected, and how they impact heavy haulers.
When Do Wisconsin’s Spring Thaw Restrictions Start?
The Wisconsin Department of Transportation (WisDOT) has announced the following restriction dates for 2025:
- March 6, 12:01 a.m.
Class II and posted road restrictions go into effect for Zones 2 through 5 (Highways south of US 8).
- March 10, 12:01 a.m.
Class II restrictions take effect in Zone 1 (Far Northern Wisconsin).
- March 10, 12:01 a.m.
Seasonal posted road restrictions apply statewide, including county highways, town roads, city, and village streets.
These restrictions will remain in effect until conditions improve and roads can safely support heavier loads.
Overweight travel is NOT restricted on the Interstate Highway System (I-39, I-43, I-90, I-94, and I-535)
Check the interactive WisDOT map for current restrictions: Wisconsin Seasonal Weight Restrictions Map
What Are Class II Roads and Seasonal Posted Roads?
Wisconsin has designated Class II roads that are more vulnerable to damage during the spring thaw. These roads are restricted to legal weight limits unless a special permit is obtained.
About 1,400 miles of state highways that cannot exceed legal weight limits.
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Local roads that may have additional weight restrictions even below legal limits during the thaw period.
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Additionally:
- Milwaukee County roads are NOT restricted for overweight travel.
- Local road restrictions vary—permits may be required from local authorities before operation.
Conclusion:
Wisconsin’s Spring Thaw Restrictions are essential for protecting roadways from damage, but they can pose challenges for carriers. To avoid delays and fines, Keep yourself informed and plan your routes in advance to stay compliant.
