 I-70 crosses to the south side of both the rail line and US 40 (Cumberland Road) between Bluff City and Brownstown.The Interstate passes to the south of St. Elmo before entering Effingham County to the west of an interchange with IL 128 at Altamont.Immediately after crossing the Little Wabash River, I-70 joins I-57 in a concurrency to pass around the west and north sides of Effingham.