Kentucky

Kentucky 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; many bridges have posted lower limits.

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

Overweight/over-dimensional permits through KYTC Division of Motor Carriers Fees: Single-trip: $30+; Annual: $60+. Texas oversize permits are not directly honored in Kentucky. You will need to obtain a Kentucky-specific permit for oversize/overweight loads. Apply online: https://transportation.ky.gov/Motor-Carriers/Pages/Over-Dimensional-Permits.aspx Enforcement: KSP enforcement; weigh stations; fines based on weight over limit.

Agricultural: Agricultural vehicles exempt; coal trucks allowed up to 126,000 lbs on designated routes with proper axle configuration. Timber/Forestry: Timber trucks allowed higher weights on designated state routes.

Spring weight restrictions on county roads. 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 Kentucky DOT page at https://transportation.ky.gov/Motor-Carriers/. Contact the Kentucky Transportation Cabinet for specific routing questions.