Oklahoma

Oklahoma interstate GVW limit: 80,000 lbs. State highways allow up to 90,000 lbs with proper axle configuration. Per-axle limits: Single axle 20,000 lbs, Tandem axle 34,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula on interstates; Oklahoma allows higher GVW on state highways with proper axle configuration. Enforcement tolerance: 5% tolerance on individual axle weights on state highways.

Height: 13 ft 6 in. Width: 8 ft 6 in. Trailer length: 53 ft (semitrailer). Overall combination length: 65 ft combination.

Oversize/overweight permits through OTA and ODOT online system Fees: Single-trip: $25; Annual: $50+. South Dakota oversize permits are not directly honored in Oklahoma. You will need to obtain a Oklahoma-specific permit for oversize/overweight loads. Apply online: https://oklahoma.gov/odot/programs-and-projects/permits.html Enforcement: OHP and ODOT enforcement; weigh stations; graduated fine schedule.

Agricultural: Agricultural vehicles exempt on state highways; cotton trailers and grain haulers have special provisions.

For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official Oklahoma DOT page at https://oklahoma.gov/odot/programs-and-projects/permits.html. Contact the Oklahoma Department of Transportation for specific routing questions.