Minnesota

Minnesota interstate GVW limit: 80,000 lbs. Per-axle limits: Single axle 20,000 lbs, Tandem axle 34,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula applies; Minnesota has additional seasonal bridge posting program. Enforcement tolerance: 10% tolerance on axle weights during spring restrictions.

Height: 13 ft 6 in. Width: 8 ft 6 in. Trailer length: 53 ft (semitrailer). Overall combination length: 75 ft combination.

Oversize/overweight permits through MnDOT online system Fees: Single-trip: $15; Annual: $60. Montana oversize permits are not directly honored in Minnesota. You will need to obtain a Minnesota-specific permit for oversize/overweight loads. Apply online: https://www.dot.state.mn.us/cvo/oversize/index.html Enforcement: MnDOT and State Patrol enforcement; weigh stations; fines per pound overweight.

Agricultural: Agricultural vehicles exempt on state highways during planting and harvest; up to 88,000 lbs during harvest season. Timber/Forestry: Timber vehicles allowed higher weights on designated routes.

Spring weight restrictions (March-May) reduce weights by 10% on state roads; county roads may have stricter reductions. Check with the state DOT for current postings and dates before planning your route.

For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official Minnesota DOT page at https://www.dot.state.mn.us/cvo/oversize/index.html. Contact the Minnesota Department of Transportation for specific routing questions.