BOSTON (WHDH) - A tractor-trailer rollover is causing backups on the eastbound side of the Mass. Pike in Boston.

Emergency crews responding to a reported crash at Storrow Drive found the tractor-trailer had rolled onto its side.

Several lanes are closed, leading to a roughly one-mile traffic backup.

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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