Stone arch bridge (Rock Bridge Rd.) S. of Chester, Chester Township, Randolph County, IL. State St. SW 0.5 miles from jct with IL3 (Opdyke St.) in Chester, SE (left) on Mullins Rd. 0.5 miles, SW (right) on Erskine St. 0.25 miles, SE (left) on Rock Bridge Rd. 150’ to the bridge on the E. side of the road. Completely overgrown with brush. (2-1-06, N37 53.91 W89 49.33) Photo by Jack Schmidt.