U.S. Federal Route 20 runs east-west across Central Delaware County. It runs from the Delaware/Dubuque County Line, at Dyersville, to the Buchanan/Delaware County Line, near Masonville. U.S. Rt. 20 passes through the following towns in Delaware County. Dyersville
Delaware Manchester U.S. Rt. 20 is not multi-plexed in Delaware County. U.S. Rt. 20 is multi-plexed in Delaware County. Iowa State Route 38, at Delaware. Iowa State Route 13, at Manchester.
WB U.S. Rt. 20 at the Delaware/Dubuque County Line. WB U.S. Rt. 20 at DCH X49. WB U.S. Rt. 20 west of DCH X49. WB U.S. Rt. 20 near DCH X47. WB U.S. Rt. 20 near DCH X35. WB U.S. Rt. 20 west of DCH X35. WB U.S. Rt. 20 west of IA St Rt 38.
