sentences:  While the railroad played a large part in the history and development of the county, the main line through the county, running along Illinois Route 3, has been abandoned and removed.However, Union Pacific tracks run through the Bottoms from the intermodal yard at Dupo in St. Clair County, running roughly parallel to Bluff Rd.which crosses them several times, through old Valmeyer and Fults on past Prairie du Rocher in Randolph County.