The last link in Appalachin Corridor L, completed in 1977. This 876 foot tall bridge, which weighs 88 million pounds, is the world's largest single arch steel span and the second-highest bridge in the United States. (The Royal Gorge Bridge over the Arkansas River in Colorado is higher.) It eliminated the 40-minute drive through mountain roads formerly required to cross the New River. On the third Saturday each October ("Bridge Day"), the bridge is open to pedestrians it is legal to parachute from the bridge deck to the river below.