A Stamford man is dead after a crash Thursday morning involving a tractor-trailer on the Merritt Parkway, Connecticut State Police said.

Akija Elezaj, 62, was pronounced dead at Stamford Hospital.

Police said Elezaj was driving behind the tractor-trailer, which was traveling north in the right lane of the Parkway (Route 15), near exit 31 in Greenwich. Tractor-trailers and other commercial vehicles are not permitted on the Merritt, which also has overpasses that are too low for tall trucks.

State police said the tractor-trailer started to move into the left lane in an attempt to clear the Stanwich Road overpass. The driver, state police said, stopped just before the overpass and Elezaj crashed into the rear of the truck at around 6 a.m.

Elezaj was taken to Stamford Hospital and pronounced dead by an emergency room physician, state police said. The operator of the tractor-trailer was uninjured. State police said no charges were imediately filed, and that an investigation is ongoing.

The Merritt crash wasn’t the only tractor-trailer accident in the area Thursday morning.

Starting around 6:20 a.m., tractor-trailers were involved in crashes on Interstate 95 between exits 14 and 13 near the Norwalk and Darien town line.

In the first I-95 crash, four cars, three trucks and one tractor-trailer were involved, according to first responders. At least four people were treated for injuries. The accident caused state police to close all southbound lanes for about 90 minutes.

Two other accidents in Norwalk and Darien further gridlocked traffic. At times, during the peak commuting hours, the accidents shut down I-95 in both directions.

Traffic maps ran red with a solid line of congestion with residual delays along roughly 20 miles of the southbound lane from Fairfield to Darien. With traffic crawling in the low teens, the 25-minute drive took closer to two hours on average.

Just as the traffic started to move, some vehicles conked out in the middle of the highway.

Ramp closures pushed the congestion onto local streets. In Norwalk, East Avenue had bumper to bumper traffic with motorists seeking detours.