Mark Twain Memorial Bridge (1936) Mark Twain Memorial Bridge (1936) The Mark Twain Memorial Bridge was a Cantilevered Through Truss Bridge carrying US 36 over the Mississippi River. It was replaced in 2000 with the extension of I-72 and subsequently demolished. The bridge, which replaced motor vehicle use of the Wabash Bridge, was opened in 1936 by President Franklin D. Roosevelt and entered Missouri at the foot of Cardiff Hill which appeared in Twain's books The Adventures of Tom Sawyer and The Adventures of Huckleberry Finn. A crosswalk crossed the highway, connecting the Twain boyhood home with the lighthouse at the top of the hill.
Mark Twain Riverboat is then routed back to the boiler. The riverboat is guided through the Rivers of America via an I-beam track, which is hidden under the green and brown dyed river water. The boat draws only of water, for the river is relatively shallow. At its deepest point it is no more than 8 feet near the switch at Fowler's Harbor, where it resides when not in operation. The boat uses clean, fresh water from a tank on board to prevent contaminants from the water in the Rivers of America from fouling the boiler. Mark Twain Riverboat "Mark Twain" Riverboat is