North Carolina

North Carolina interstate GVW limit: 80,000 lbs. Per-axle limits: Single axle 20,000 lbs, Tandem axle 38,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula applies; NC allows higher tandem axle weights than federal standard. Enforcement tolerance: Limited tolerance on tandem axle weights.

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

Oversize/overweight permits through NCDOT PIMS online system Fees: Single-trip: $15; Annual: $75+. South Carolina oversize/overweight permits are honored under reciprocal agreements. Verify specific terms before travel. Apply online: https://connect.ncdot.gov/business/trucking/pages/overpermits.aspx Enforcement: SHPD and DOT enforcement; weigh stations; per-pound fines.

Agricultural: Agricultural vehicles exempt on state highways; farm equipment has width exemptions. Timber/Forestry: Timber vehicles allowed higher weights on designated state roads.

For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official North Carolina DOT page at https://connect.ncdot.gov/business/trucking/. Contact the North Carolina Department of Transportation for specific routing questions.