New River Bridge in Autumn, Fayetteville, West Virginia. When it was constructed, it was the longest steel arch bridge in the world. In 2003, with the construction of Shanghai's Lupu Bridge, it is now the second longest. It is situated in the northern section of the 53-mile long New River Gorge National River, a unit of the National Park Service, and is surrounded by the Appalachian Mountain forest. Once a year on Bridge Day it is legal to walk on, jump and rappel from the bridge. The festival has grown since 1980 to one with an average of 80,000 spectators watching nearly 400 B.A.S.E. jumpers and 300 rappellers.