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Connecticut
Weight Limits
Connecticut interstate GVW limit: 80,000 lbs. Per-axle limits: Single axle 22,400 lbs, Tandem axle 36,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula applies; many older bridges have posted lower limits. Enforcement tolerance: No tolerance; immediate fines for any overweight violation.
Size Limits
Height: 13 ft 6 in. Width: 8 ft 6 in. Trailer length: 53 ft (semitrailer). Overall combination length: No overall limit for STAA combinations.
Oversize/Overweight Permits
Oversize/overweight permits through CT DOT Motor Carrier Services Fees: Single-trip: $35; Annual: $150+. Pennsylvania oversize permits are not directly honored in Connecticut. You will need to obtain a Connecticut-specific permit for oversize/overweight loads. Apply online: https://portal.ct.gov/dot/permits/highways/oversize-overweight-permits Enforcement: All commercial vehicles must stop at weigh stations; strict enforcement.
Exemptions
Agricultural: Agricultural vehicles exempt within 10 miles of farm on non-interstate roads.
Seasonal Restrictions
Spring weight restrictions on posted roads during thaw season. Check with the state DOT for current postings and dates before planning your route.
Official Source
For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official Connecticut DOT page at https://portal.ct.gov/dot/permits/highways/oversize-overweight-permits. Contact the Connecticut Department of Transportation for specific routing questions.
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Weight and size limits are subject to change. Always verify current limits on the official state DOT website before travel. Seasonal restrictions, bridge postings, and local ordinances may further reduce allowable weights. Data reflects 2025-2026 regulations where available.