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Minnesota Frost Laws, Seasonal Load Weight and Speed Restrictions – 2020

As of March 11th, 2020  the last update was March 10th 2019 for Winter Load Increase end date set for the NORTH-CENTRAL and NORTH FROST ZONES

Spring Load Restrictions start date set for the CENTRAL, NORTH-CENTRAL and NORTH FROST ZONES


The Minnesota Department of Transportation will end winter load increases and start spring load restrictions (SLR) in the NORTH and NORTH-CENTRAL frost zones Friday, March 13, 2020 at 12:01 AM. Spring load restrictions has already begun in the other frost zones. Frost zones and restricted routes can be found on the MnDOT load limits map. Start and end dates and other load limit information are shown at mndot.gov/loadlimits. Overweight permits for more than 80,000 pound gross vehicle weight will continue and new permits will be issued if all axle and group weights are legal (axle weight limits). 

The Minnesota weight limits pamphlet and map can be found at:

For Seasonal Load Limits see: http://www.dot.state.mn.us/materials/pvmtdesign/sll/updates.html

This is a tabbed table showing dates and routes subject to seasonal restrictions, maps, weight information, seasonal load limits, etc.

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