Local

Crash involving tractor-trailer wipes out guardrail, snarls morning traffic on I-495 in Chelmsford

CHELMSFORD, Mass. — A crash involving a tractor-trailer and a car wiped out a large section of guardrail, causing lengthy delays on Interstate 495 in Chelmsford on Thursday morning.

Troopers responding to a report of a crash on the northbound side of the highway near mile marker 85.2 just after 4 a.m. found significant guardrail damage, according to Massachusetts State Police.

There were no injuries or fuel spills reported in the crash.

Aerial video captured by a Boston 25 drone showed traffic backed up for miles as crews worked to clear the wreckage.

All lanes were opened around 8 a.m. but state police warned of residual traffic delays in the area.

The cause of the crash remains under investigation.

This is a developing story. Check back for updates as more information becomes available.

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