At the time of its completion , the bridge was reportedly the longest in the world at 7,140 feet ( 2,180 m ) .
The bridge was constructed from May 1869 to January 1871 by the Baltimore and Ohio Railroad .
At the time of bridge 's completion , the bridge was reportedly the longest in the world at 7,140 feet ( 2,180 m ) .
The bridge was constructed from May 1869 to January 1871 by the Baltimore and Ohio Railroad .