Massachusetts

Massachusetts interstate GVW limit: 80,000 lbs. Per-axle limits: Single axle 22,400 lbs, Tandem axle 36,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula applies; many older bridges have posted lower limits; Storrow Drive famously has 10 ft clearance. Enforcement tolerance: No tolerance; one of the strictest enforcement states.

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

Oversize/overweight permits through MassDOT Highway Division Fees: Single-trip: $40+; Annual: $200+. Delaware oversize permits are not directly honored in Massachusetts. You will need to obtain a Massachusetts-specific permit for oversize/overweight loads. Apply online: https://www.mass.gov/info-details/commercial-truck-permits-height-and-weight-limitations Enforcement: Strict enforcement; all commercial vehicles subject to inspection; high fines for overweight violations.

Agricultural: Agricultural vehicles exempt within local area.

Spring weight restrictions on posted roads during thaw season. 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 Massachusetts DOT page at https://www.mass.gov/info-details/commercial-truck-permits-height-and-weight-limitations. Contact the Massachusetts Department of Transportation for specific routing questions.