Spring Frost Zones

Spring truck weight restrictions on state highways begin Friday, March 14th for Minnesota's South, Southeast and Metro frost zones, according to the Minnesota Department of Transportation.
Winter load increases and overweight permits remain in place for the state's Central, North-Central and North frost zones.

MnDOT limits truck weights to prevent damage to roads weakened during the spring thaw. Ending dates for spring load restrictions will be established by monitoring roadway strength as weather conditions change.

The Southeast Zone extends south from the southern limit of the Metro Zone along, but not including, I-35 to the Iowa state line and east to the Wisconsin state line.

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