Route 185 is a highway in eastern Missouri. Its northern terminus is at Route 100 west of Washington; its southern terminus is at Route 8 in Potosi. A spur of Highway 185 goes into Meramec State Park and Meramec Conservation Area. Route description History Major intersections Related route Route 185 Spur is a , winding road that leads into Meramec State Park on the east side of Sullivan. References 185 Transportation in Washington County, Missouri Transportation in Franklin County, Missouri