A list of jurisdictions that recognize Spring Thaw/Frost Laws on roads that are subject to thaw weakening.

Spring Thaw/Frost Laws by State

Seasonal restrictions on traffic weight limits and speeds

Below are the jurisdictions that recognize Spring Thaw/Frost Laws on roads that are subject to thaw weakening. Click the state/territory for specific rules applicable to each jurisdiction.

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United States

Canada

Minnesota

British Columbia

Nevada

Manitoba

North Dakota

New Brunswick & Map

South Dakota

Northwest Territories

Wisconsin

Nova Scotia

Wyoming

Ontario

 Prince Edward Island

 Saskatchewan

 Quebec

 Yukon Territory