As you can see by this Google Earth image, the Old Salmon Falls Bridge, an access across the South Fork of the American River used before Folsom Dam was built, but now usually covered by water.
Occassionally we will be able to see it uncovered but with our current Folsom Lake levels it is truly a Bridge Out of Water. Here are a couple pictures of the bridge and the area around it yesterday - January 18, 2014.
Other posts related to Folsom Lake's Low Levels:
How Low Can You Go? - Folsom Lake - October 1, 2013
Folsom Lake Revealed - December 29, 2013