(DUBUQUE, Iowa) — As many as 11 barges broke loose from their tow Friday afternoon and slammed into upstream side of Lock and Dam 11 on the Mississippi River at Dubuque, KWWL.com reported.
The barges hit the dam at midafternoon. It's not clear what caused the barges to break free.
It could take several days to remove the 11 barges from their resting points against the dam.
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