Maryland

Maryland 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; county-specific bridge restrictions.

Height: 13 ft 6 in. Width: 8 ft 6 in. Trailer length: 53 ft (semitrailer). Overall combination length: No overall limit for tractor-semitrailer on National Network.

Hauling permits through MDOT SHA Motor Carrier Division Fees: Single-trip: $25; Annual: varies by weight and route. North Dakota oversize permits are not directly honored in Maryland. You will need to obtain a Maryland-specific permit for oversize/overweight loads. Apply online: https://www.roads.maryland.gov/mdotsha/pages/index.aspx?pageid=189 Enforcement: MDSP and SHA enforcement; weigh stations on major corridors; fines per pound overweight.

Agricultural: Agricultural vehicles exempt on county roads.

For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official Maryland DOT page at https://www.roads.maryland.gov/mdotsha/pages/index.aspx?pageid=189. Contact the Maryland Department of Transportation State Highway Administration for specific routing questions.