Colorado

Colorado interstate GVW limit: 80,000 lbs. State highways allow up to 85,000 lbs with proper axle configuration. Per-axle limits: Single axle 20,000 lbs, Tandem axle 36,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula on interstates; Colorado weight table on state highways. Enforcement tolerance: No general tolerance on interstates; limited tolerance on state roads.

Height: 14 ft 6 in. Width: 8 ft 6 in. Trailer length: 57 ft (semitrailer). Overall combination length: 75 ft combination.

Colorado Oversize Overweight Permitting and Routing (COOPR) system for online permits Fees: Single-trip: $15; Annual: $100. New Hampshire oversize permits are not directly honored in Colorado. You will need to obtain a Colorado-specific permit for oversize/overweight loads. Apply online: https://coopr.codot.gov/ Enforcement: Ports of Entry; mobile enforcement; fines based on overweight amount.

Agricultural: Farm vehicles hauling agricultural products allowed up to 85,000 lbs on state highways. Timber/Forestry: None specific beyond standard permit system.

Spring weight restrictions on selected mountain roads; chain law on I-70. 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 Colorado DOT page at https://www.codot.gov/business/permits/truckpermits. Contact the Colorado Department of Transportation for specific routing questions.