Traffic is switching late Sunday night on I-65 as part of a concrete restoration project between U.S. 30 and U.S. 231.Southbound traffic will be switched to the northbound side of the road, where two lanes will flow in each direction.As part of the traffic switch, the southbound ramps at 109th Avenue will be closed as they will be inaccessible with work happening in the southbound lanes. The switch should be complete by Monday morning.The project is anticipated to wrap up by October.State road detours must be on state-maintained roads only. For the southbound 109th Avenue ramps, northbound traffic will be detoured west on U.S. 231, north on State Road 53 (Broadway) to 109th. Southbound traffic will be detoured west on U.S. 30 and south on SR 53 (Broadway) to 109th.