Illinois State Route 173 is the northern most east-west highway in Lake County. This runs from the Mc Henry/Lake County Line to Zion. IL St Rt 173 pases through the following towns in Lake County. Fox Lake Channel Lake Lake Catherine Antioch Old Mill Creek Rosecrans
Wadsworth
Zion
IL St Rt 173 is not multi-plexed in Lake County. IL St Rt 173 intersects the following highways in Lake County. Illinois State Route 59, at Antioch.
A junction marker on NB IL St Rt 59. A guide marker on NB IL St Rt 59. EB IL St Rt 173 west of IL St Rt 83. EB IL St Rt 173 in Anticoh. A BGS on NB I-94. A BGS on NB I-94. A BGS on SB I-41/U.S. Rt. 41; EB I-94. A BGS on SB U.S. Rt. 41. A junction marker on NB IL St Rt 137. A junction marker on NB IL St Rt 137. The eastern end point in Zion. The eastern end marker.
