North Fork American River
The North Fork American River is the longest branch of the American River in Northern California. It is long from its source at the crest of the Sierra Nevada, near Lake Tahoe, to its mouth at Folsom Lake northeast of Sacramento. Prior to the construction of Folsom Dam the river was about longer making for a total length of .
New River (Kanawha River tributary)
Few highways cross the gorge, with the most dramatic bridge by far being the New River Gorge Bridge on U.S. 19, a steel arch bridge spanning , with the roadway above the average level of the river. This structure is the third-longest single-arch bridge in the world, and is also the world's twenty-third-highest vehicular bridge, and the fourth highest in the Americas.