Oil leaked into the Milwaukee River Thursday evening after a malfunction in the hydraulic lift system of the Wisconsin Avenue bridge, according to state and city officials. The leak began at about 5 p.m. Thursday, Sept. 24. A Wisconsin Department of Natural Resources spokesperson said the spill had been contained. Officials have not said how much oil entered the river. A city spokesperson said crews completed repairs to the bridge on Friday. No further details about the response or the spill’s environmental effects were provided.