The Army Corps of Engineers says it has reopened a lock on the Mississippi River near St. Louis that had been closed for repairs since last week.

Scores of barges and boats had been backed up on the river because of the closure.

Corps spokesman Alan Dooley says barge and boat traffic started moving through the lock near Winfield, Mo., early Tuesday morning.

Traffic had been backing up on the river since the lock was shut down last Wednesday for repairs to a hinge on one of the lock’s gates.

Dooley says nearly 200 loaded barges, plus pleasure boats and other vessels, were waiting to pass as of Monday.