Due to scheduled maintenance and repairs, the north (1,200 ft.) chamber at McAlpine Locks and Dam on the Ohio River in Louisville, Ky., will be closed from June 15 through November 13, 2020 for miter gate replacement. During this time all traffic will be passed through the south (1,200 ft.) chamber. Starting around June 20, dredging operations of the lower approach will also be conducted. This will include a total river closure during nighttime hours of 6 p.m. to 6 a.m from July 3 through July 7.