REVERE, MASS. (WHDH) - A jackknifed tractor-trailer is causing major traffic backups on Route 1 in Revere on Monday morning.

Troopers responding to a reported crash on Route 1 northbound at Copeland Circle found a jackknifed tractor-trailer.

The operator was transported to an area hospital with non-life-threatening injuries, according to state police.

Traffic is being diverted from Route 1 northbound past Copeland Circle and back onto Route 1 northbound.

There are heavy backups on both the northbound side and the southbound side.

No additional information has been released.

This is a developing story; stay with 7NEWS on-air and online for the latest updates.

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