Rock Island County, is the western most county that U.S. Federal Route 6 passes through in Illinois. About half of U.S. Rt. 6 in Rock Island County is on interstate standard highway. It also provides access to the Quad City International Airport. U.S. Rt. 6 passes through the following towns. Moline
U.S. Rt. 6 is multi-plexed in Rock Island County. Interstate 74, from the Iowa/Illinois State Line to Interstate 280 at Moline.