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Winter load increases to begin on Hwys in the north frost zone on Dec. 9

Dec 07, 2022 09:23AM ● By Content Editor
Photo: Boreal Community Media files

From the Minnesota Department of Transportation - December 5, 2022

MnDOT will begin winter load increases on unrestricted Hwys in the north frost zone at 12:01 a.m. on Friday, Dec. 9, 2022.

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

Vehicles will be allowed to operate up to 10 percent over the standard legal maximum loads on unrestricted Hwys during the winter load increase period.  However, trucks must comply with current registration weight laws and not exceed registered gross weight tolerances.  Please check with local agencies (cities, counties and townships) prior to increasing any weights on their routes. The sign erected on the roadway governs the load limit in effect.  A winter weight increase permit is required to take advantage of the 10 percent weight increase on interstate Hwys only; a permit is not required for state trunk Hwys.

MnDOT will report start and end dates on its 24-hour automated message center at 1-800-723-6543 for the U.S. and Canada, and locally at 651-366-5400 for the Minneapolis/St. Paul area.

For questions about legal axle weight during SLR; Gross Vehicle Weight Schedule, call:

Minnesota Department of Public Safety
State Patrol – Commercial Vehicle Enforcement

For questions about oversize/overweight loads/permitting, call:
Minnesota Department of Transportation
Freight and Commercial Vehicle Operations – Oversize/Overweight Permits

Or email:  [email protected]

All changes are made with a minimum three calendar-day notice.

For the most current information, go to MnDOT’s automated 24-hour message center at 800-723-6543 for the U.S. and Canada, or 651-366-5400 for the Minneapolis/St. Paul area. This information is also published on the MnDOT seasonal load limits website at

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