Illinois State Route 54 runs in the west-central portion of Iroquois County. This is the northern most county that it passes thorugh. IL St Rt 54 passes through the following towns in Iroquois County. Ridgeville
Onarga
IL St Rt 54 is not multi-plexed in Iroquois County. IL St Rt 54 intersects the following highways in Iroquois County. Interstate 57, near Onaraga. U.S. Rt. 45, at Onaraga.
NB IL St Rt 54 at the Ford/Iroquois County Line. NB IL St Rt 54 south of Ridgeville. NB IL St Rt 54 west of Onarga. SB IL St Rt 54 south of I-57. A BGS on NB I-57. A BGS on NB I-57. A BGS on SB I-57. NB IL St Rt 54 west of I-57. NB IL St Rt 54 in Onarga. A junction marker on NB U.S. Rt. 45. The end of NB IL St Rt 54. The northern end marker.
