U.S. Federal Route 20 runs east-west across Central Dubuque County. It is a multi-lane highway across the county, except at the Mississippi River crossing. U.S. Rt. 20 passes through the following town in Dubuque County. Dubuque
U.S. Rt. 20 is not multi-plexed in Dubuque County. U.S. Rt. 20 crosses the following highways in Dubuque County. Iowa State Route 136, near Dyersville. Iowa State Route 32, at Dubuque.
U.S. Rt. 52, at Dubuque. (NO Direct Interchange) U.S. Rt. 61, at Dubuque. (NO Direct Interchange) U.S. Rt. 151, at Dubuque. (NO Direct Interchange)
EB U.S. Rt. 20 in Dubuque. A BGS on NB U.S. Rt. 52/61/151. The Mississippi River Bridge on U.S. Rt. 20 as seen from NB U.S. Rt. 52/61/151. EB U.S. Rt. 20 on the Iowa side of the birdge. EB U.S. Rt. 20 at the main truss. EB U.S. Rt. 20 in the main arch of the bridge. EB U.S. Rt. 20 near the Illinois State Line.
