U.S. Federal Route 30 runs east-west across Central Whiteside County. It runs from the Illinois/Iowa State Line, near East Clinton, to the Whiteside/Lee County Line, near Rock Falls. U.S. Rt. 30 passes through the following towns in Whiteside County. Union Grove Unionville Morrison Rock Falls
EB U.S. Rt. 30 crossing the Mississippi River. EB U.S. Rt. 30 at the Illinois Welcome Sign near East Clinton. A Whiteside County mile marker. A BGS on WB I-88/IL St Rt 110. EB U.S. Rt. 30 in Rock Falls. A BGS on EB I-88/IL St Rt 110. A BGS on WB I-88/IL St Rt 110. EB U.S. Rt. 30 at the Whiteside/Lee County Line.