Construction work on I39/90 through Janesville at the Highway 26/Milton Avenue interchange may impact traffic flow overnight . The DOT warned one southbound lane would be closed from 10:00 a.m. until about 1:00 p.m. Wednesday. Another lane closure in this area will begin at 7:00 p.m. Wednesday until 5:00 a.m. Thursday. A 14-foot width restriction will occur within the work zone, and oversize vehicles must use the interchange ramps to bypass the operation. Construction crews plan to complete repairs to the existing southbound Interstate bridge over the highway.