Hawaii

Hawaii interstate GVW limit: 80,000 lbs. Per-axle limits: Single axle 22,500 lbs, Tandem axle 34,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula applies; many bridges have posted lower limits. Enforcement tolerance: Limited tolerance due to older infrastructure.

Height: 14 ft. Width: 9 ft. Trailer length: 53 ft (semitrailer on designated routes). Overall combination length: 65 ft combination.

Special permits for oversize/overweight loads through HDOT Highways Division Fees: Single-trip: $25; varies by island and route. Rhode Island oversize permits are not directly honored in Hawaii. You will need to obtain a Hawaii-specific permit for oversize/overweight loads. Apply online: https://hidot.hawaii.gov/highways/ Enforcement: Enforcement on limited highway network; portable scales used.

Agricultural: Agricultural vehicles exempt on plantation roads and local routes.

For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official Hawaii DOT page at https://hidot.hawaii.gov/highways/. Contact the Hawaii Department of Transportation for specific routing questions.