U.S. Federal Route 77 is the main north-south highway through Butler County. For seven miles east of Augusta, this is a expressway. U.S. Rt. 77 passes through the following towns in Butler County. Douglass Augusta El Dorado U.S. Rt. 77 is multi-plexed in Butler County. U.S. Rt. 54, from Augusta to El Dorado. U.S. Rt. 400, from Augusta to near Leon. U.S. Rt. 77 intersects the following highways in Butler County. U.S. Rt. 54, at Augusta. U.S. Rt. 400, at Augusta. U.S. Rt. 400, near Leon. U.S. Rt. 54, at El Dorado. Kansas State Route 254, at El Dorado. Interstate 35, near El Dorado. Kansas Turnpike, near El Dorado.
