Illinois State Route 157 runs north-south along the Mississippi River bluffs in St. Clair County. Mort of this highways runs along Interstate 255 in the Metro-East Area of the St. Louis Area. IL St Rt 157 passes through the following towns in St. Clair County. Collinsville Caseyville East St. Louis
BGS on EB I-64/U.S. Rt. 50. NB IL St Rt 157 in Caseyville. A BGS on WB IL St Rt 15. A BGS on EB IL St Rt 15. NB IL St Rt 157 at EB IL St Rt 13. A junction marker on SB IL St Rt 163. A BGS on SB I-255/EB U.S. Rt. 50. A junction marker on NB IL St Rt 3. The southern end of IL St Rt 157. The southern end marker.
