Location: I-64 and IL 4, St. Clair Cty Reassurance shield after the Illinois 4 junction. Location: I-64 and IL 4, St Clair Cty Four miles to Route 161. Location: I-64 and IL 161, St Clair Cty Exit for IL 161.  E to IL-177, W to US-50/IL-158  E to IL-160, W to IL-4  N to US-50, … Continue reading Interstate 64, IL-4 to IL-161