U.S. Federal Route 6 runs east-west across Pottawattamie County. This enters the county from the State of Nebraska on Interstate 480. U.S. Rt. 6 passes thorugh the following towns in Pottawattamie County. Council Bluffs Oakland U.S. Rt. 6 is multi-plexed in Pottawattamie County Interstate 480, at Council Bluffs.