Big Black River Station, Miss. Wagons and Sheds (U.S. Civil War) The Big Black River Station in Mississippi was a significant rail transportation hub during the U.S. Civil War. Located near the Battle of Big Black River Bridge, this strategic site served as a vital supply route for both Union and Confederate forces. The station consisted of wagons and various sheds used for storing supplies and repairing locomotives. The site's importance in the war and its historical significance continue to attract interest from history enthusiasts and researchers.