Reply Roadwork on Route 176 over the Des Plaines River bridge will limit the roadway down to one lane throughout the spring and early summer. (Shutterstock) LIBERTYVILLE, IL — An upcoming roadwork project in Libertyville could cause traffic throughout the springtime and into early summer on the Route 176 bridge across the Des Plaines River bridge. In a news alert, the Village of Libertyville announced the Illinois Department of Transportation will begin work on the project on April 19. During the first phase of the project, a temporary traffic signal will be installed, and Route 176 will be limited to one lane. The bike lane across the bridge will also be closed.