On January 13, 2018, at 0630 local time, 27 dry cargo barges broke free from the Jacks Run barge fleeting area at mile 4 on the right descending bank of the Ohio River near Pittsburgh, Pennsylvania. The barges drifted uncontrolled downriver and, beginning at 0712, struck the dams at the US Army Corps of Engineers Emsworth Locks and Dams complex, located at mile 6.2. Two Corps of Engineers workboats moored at the foot of the dam were also struck and driven into one of the dam’s concrete piers, causing significant damage to both vessels. Nine barges and the Army workboats were declared constructive total losses in the accident. Total damage exceeded $12.5 million.