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 The waiting area is made to resemble a real riverboat loading area, with cargo deliveries sharing space on the dock. Historic United States flags are displayed at the attraction's entrance. Upon boarding "Mark Twain", passengers are free to move about her three levels. The lower deck's bow has chairs. The upper deck provides a vantage point for viewing landmarks throughout the voyage. The wheelhouse, where "Mark Twain"s pilot is stationed, is also located on the upper deck. The lower level of the wheelhouse features a sleeping area and a sink to maintain the illusion of this being the captain's living