U.S. Federal Route 20 is a east-west highway across Central Stephenson County. This highway has by-passed the Freeport Area. The by-pass is being up-graded to four-lanes. As of June, 2005, it is a four-lane highway from east of Freeport to the Stephenson/Winnebago County Line. U.S. Rt. 20 passes through the following towns in Stephenson County. Eleroy
U.S. Rt. 20 is not multi-plexed in Stephenson County. U.S. Rt. 20 intersects the following highways in Stephenson County. Illinois State Route 73, near Lena. BUSN U.S. Rt. 20, near Freeport.
Branches of U.S. Rt. 20 in Stephenson County. A junction marker on SB IL St Rt 73. EB U.S. Rt. 20 near Eleroy. A Stephenson County mile marker. EB U.S. Rt. 20 west of Freeport. A guide BGS on NB IL St Rt. 26. EB U.S. Rt. 20 east of IL St Rt 26. (June, 2005) EB U.S. Rt. 20 east of IL St Rt 26. (April, 2007) EB U.S. Rt. 20 near Ridott.