The Minnesota Department of Transportation will begin winter load increases on unrestricted highways in the SOUTH and SOUTHEAST frost zones at 12:01 AM on Monday, December 29, 2025.
Winter load increases have already begun in the other zones.
Seasonal load limit (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.
Vehicles will be allowed to operate up to 10 percent over the standard legal maximum loads on unrestricted highways 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 highways only; a permit is not required for state trunk highways.
Questions? WCS Permits & Pilot Cars Can Help
WCS Permits & Pilot Cars is North America’s oversize load authority. We provide various industries with oversize load permits, trip & fuel permits, superload permits, route surveying, transportation consulting, pilot car dispatching and truck safety equipment throughout the United States and Canada.
WCS has over 75 permit agents who have the experience and knowledge to permit oversize loads in a timely fashion and advise on any oversize or holiday travel restrictions.

