The sandstone railroad bridge features three full center arches, each with a 56-foot (17 m) span and a 28-foot (8.5 m) rise.When built in 1851, it carried a double track of the original Baltimore and Ohio Railroad main line.[2] As the state boundary follows the southern bank of the Potomac, nearly all of the bridge is located in Garrett County, Maryland.The Bloomington Viaduct was listed on the National Register of Historic Places on November 21, 1976.You can help Wikipedia by expanding it.This article about a specific rail bridge in the United States is a stub.