Built in 1854 as part of a planked toll road, Mary's River Covered Bridge is a must-see for any history buff. In fact, Mary's River Bridge is the only covered bridge remaining in Southern Illinois! Since its construction, the bridge has been restored using original timber and stone abutments. The bridge operated from 1854 to 1930 continuously. It was added to the National Register of Historic Places in 1974. Visit Mary's River Covered Bridge any time during your next adventure in ILLINOISouth!