St. Clair County Highway P53 is a north-south highway in Western St. Clair County. This runs from St. Clair County Highway P57, south of Millstadt, to Cahokia.
A guide marker on NB SCCH P53. NB SCCH P53 north of SCCH P57. NB SCCH P53 south of IL St Rt 158. SB SCCH P53 south of IL St Rt 157.
