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 Cave of Cameron Cave are offered, but are of a more primitive nature. The cave has no electric lights, and the only modifications made have been those mandated by law for safety. The entire cave complex is privately owned by the Coleberd family, descendants of Judge Cameron. It includes Mark Twain and Cameron caves, a campground, gift shop/visitors center, candle shop and winery. Other available activities include "The Life and Times of Mark Twain", a one-man stage performance that covers various highlights and the humor of the famed authors life from a first-person perspective. One of the newest additions to the