The I-39/90 expansion project causes temporary lane closures on US Highway 14 in Janesville.
The Wisconsin Department of Transportation says Highway 14 westbound will be closed at the Interstate starting at 10:00 Monday night and running until 6:00 Tuesday morning.
The following night eastbound Highway 14 will be closed during the same time period.
The closure is necessary while crews set girders for the newly widened southbound Interstate bridge.
Traffic must follow the signed detour routes of Deerfield Drive and State Highway 26.