U.S. Federal Route 6 runs breifly through the southeastern portion of Cedar County. U.S. Rt. 6 does not pass through any towns in Cedar County. U.S. Rt. 6 is multi-plexed in Cedar County. Interstate 80, from the Scott/Cedar County Line to IA St Rt 38. Iowa State Route 38, from I-80 to the Muscatine/Cedar County Line. U.S. Rt. 6 intersects the following highways in Cedar County. Iowa State Route 38, near Wilton. Interstate 80, near Wilton.