Connecticut is a small but high-traffic state positioned between New York City and Boston, making it one of the most congested freight corridors in the country. I-95 along the coastline and I-84 across the state's interior are the primary commercial vehicle arteries, carrying through-freight from the Northeast's busiest markets. Despite its size, Connecticut has significant freight generators including manufacturing, pharmaceuticals, and distribution serving Fairfield County's dense population. The Connecticut Department of Motor Vehicles (CT DMV) handles commercial vehicle credentialing including IRP and IFTA. The Connecticut Department of Transportation (CTDOT) oversees infrastructure and permitting. A key concern for carriers is bridge weight restrictions on I-95 and on secondary roads throughout the state — Connecticut's aging bridge infrastructure leads to numerous posted weight limits that affect routing decisions. Hazardous materials routing restrictions apply on several tunnels and urban corridors.
| GVWR | 80,000 lbs federal interstate standard |
| Single axle | 22,400 lbs on state highways (higher than federal minimum) |
| Tandem axle | 36,000 lbs on state highways |
Connecticut state highway weight limits are higher than the federal Interstate minimums on certain non-Interstate routes. However, numerous bridges have lower posted limits — carriers must check bridge ratings for specific routes. Overweight permits available from CTDOT.
State trucking association: Motor Transport Association of Connecticut
No. The Merritt Parkway (SR-15) and Wilbur Cross Parkway are completely prohibited for all commercial vehicles, including pickups with commercial plates. Violations are actively enforced. Carriers should use I-95 along the coast or I-91/I-84 through the interior as alternatives.
Connecticut has numerous bridges with posted weight limits below the standard 80,000-lb limit, particularly on I-95 and on secondary state routes. Carriers must verify bridge ratings for specific routes before dispatching overweight loads. CTDOT publishes bridge load rating information and CTDOT's permit office can advise on compliant routing.
Yes. Connecticut enacted a highway use fee for heavy trucks assessed on miles traveled on state roads. The fee applies to vehicles with a GVWR over 26,000 lbs. Carriers must register and file returns through the Connecticut Department of Revenue Services.
Yes. Federal hazmat routing regulations apply, and Connecticut has additional local restrictions, particularly through Hartford, New Haven, and along I-95 tunnel segments. Carriers transporting certain explosives, flammables, or radioactive materials must follow prescribed alternate routes that avoid restricted tunnels and urban core areas.