Valley Railroad Bridge - Credit: Wikimedia Commons
Valley Railroad Bridge or Gish Branch Bridge is a historic limestone arch bridge located over Gish Branch at Salem, Virginia. It was built in 1873 by the firm of Claiborne Rice (C.R.) Mason, under the local guidance of Thomas Menifee, engineer and employee of Mason. Mason was head of a syndicate hoping to link major railways of the north and south at Salem, Virginia - specifically by linking the Atlantic, Mississippi and Ohio Railroad with the Baltimore and Ohio Railroad, two of the major railways of the era. Read more on Wikipedia
Source: en.wikipedia.org