BOSTON (CBS) – A pothole on the top deck of the Tobin Bridge sent debris falling onto the roadway below, impacting traffic in both directions.

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Massachusetts State Police said just after 11 a.m. that the pothole opened up on the Tobin Bridge’s southbound side.

Because of the falling debris, which landed in the right lane of Route 1 northbound on the lower deck, one lane is closed in each direction.

State police said none of the falling debris caused damage to any vehicles. No injuries have been reported.