MOUNTAIN QUARRIES RAILROAD BRIDGE
The bridge spans the American River on the boundary between Placer and El Dorado Counties. Built in 1912, the bridge is a very early example of reinforced concrete railroad bridge construction. It was designed by John B. Leonard, a renowned pioneer in the design, engineering, and use of reinforced concrete in California and the nation. From 1912 to 1942, the Mountain Quarries Bridge operated trains over the bridge, carrying loads of sandstone to Auburn, California to meet up with the Southern Pacific Railroad. Listed on the National Register of Historic Places, 2/11/2004, NPS-04000014.
Registration Date: 4/7/2014
Downstream from the State Highway 49 Bridge over the North Fork of the American River.
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