Thursday, January 7, 2016

Winter Load Increases will begin the North-Central Frost Zone

 Winter Load Increases will begin on unrestricted highways in the NORTH-CENTRAL FROST ZONE at 12:01 AM on Sunday, January 10, 2016. Winter Load Increases are already in effect for the NORTH FROST ZONE.

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.

For questions about legal weight/size trucking, call: Minnesota Department of Public Safety - State Patrol - Commercial Vehicle Enforcement (651) 405-6196 (select Option 3, Option 3)

For questions about over legal weight/size "heavy haul" trucking, call:
Minnesota Department of Transportation, Freight and Commercial Vehicle Operations - Oversize/Weight Permits (651) 296-6000 or email:

Winter Load Increases starting and ending dates are based on how weather is affecting roadway strength.  These dates are established by monitoring roadway strength as weather conditions change.  Therefore, the ending date for Winter Load Increases is variable and drivers MUST check for updates throughout the year. Vehicle operators are required to check with the Minnesota Department of Transportation (MnDOT) for the exact start and end dates.

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

For the most current information, please go to MnDOT’s automated 24-hour message center at (800) 723-6543 for the USA and Canada, or locally at (651) 366-5400 for the Minneapolis/St Paul area.  This information is also published on the MnDOT Seasonal Load Limits website at