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 .
Knight's Ferry Bridge
The Knight's Ferry Bridge, spanning the Stanislaus River at Knights Ferry, California, is the longest covered bridge in the United States. It was designated a U.S. National Historic Landmark in 2012.
It was for a long time known as the longest covered bridge west of the Mississippi, and since the 2011 destruction of Old Blenheim Bridge in New York State, which had approximately the same length, is undisputed as the longest in the U.S.