Ottawa, Ill. -- The Troy Grove Blacktop bridge over Tomahawk Creek will be closed Monday until this fall. The LaSalle County Highway Department says that bridge is being replaced. No detours are being posted, so drivers will need to find other ways around the construction themselves.
     The highway is also known as County Highway 13. The bridge is three quarters of a mile south of County Highway 33 or Wallace-Waltham Rd. between LaSalle and Troy Grove.