2022 load spring weight restrictions and frost laws.
The Frozen Road Period will begin in
Zone 5 Saturday, January 22, 2022, at 12:01 AM CST. The Frozen Road
Period was already in effect in Zones 1 through 4.
public invests tax dollars every year for safe, reliable infrastructure.
The Wisconsin Department of Transportation is charged with maximizing
and protecting this investment. Seasonal weight restrictions are one way
to prolong the life of Wisconsin highways. They allow industry trucking
partners to carry heavier loads during winter and help protect the
roads during spring thaws.
The frozen road law allows heavier loads for trucks carrying logs cut crosswise (not including woodchips), and salt and sand for winter maintenance while cold weather allows.
WisDOT and county
highway personnel monitor temperature forecasts, along with frost tubes -- liquid-filled devices under pavement -- to help determine when roads are adequately frozen to accommodate heavier loads.
The declaration is issued once the ground under highway pavement is frozen to a depth of at least 18 inches, allowing the maximum gross weight for trucks hauling logs or salt and sand for maintaining
roads in winter to go up to 98,000 pounds on vehicles with a minimum of five axles (from the normal 80,000 pounds). Special permits for hauling the increased weights are not required in Zone 1, but vehicles must be legally licensed at 80,000 pounds to handle
the increased weights. The higher weight limits do not apply to county or local roads unless authorized by the local agency having maintenance authority. Also, higher weights may not be transported on any highways or bridges specifically posted for lower weight
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