California

California 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; California also uses its own permit weight table. Enforcement tolerance: No general tolerance; strict enforcement statewide.

Height: 14 ft. Width: 8 ft 6 in. Trailer length: 53 ft (semitrailer on STAA network). Overall combination length: 65 ft combination (non-STAA); no limit on STAA routes.

Transportation permits for oversize/overweight vehicles through Caltrans online system Fees: Single-trip: $16; Annual: $90. North Carolina oversize permits are not directly honored in California. You will need to obtain a California-specific permit for oversize/overweight loads. Apply online: https://dot.ca.gov/programs/traffic-operations/transportation-permits Enforcement: CHP weigh stations (every commercial vehicle must stop); fines $1+ per pound overweight.

Agricultural: Agricultural vehicles exempt on local roads; cotton module movers have special provisions. Timber/Forestry: Logging trucks allowed higher weights on designated roads with permit.

Chain controls in mountain passes during winter; no spring thaw restrictions. 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 California DOT page at https://dot.ca.gov/programs/traffic-operations/transportation-permits. Contact the California Department of Transportation (Caltrans) for specific routing questions.