Thomas Viaduct - Credit: Wikimedia Commons
Thomas Viaduct - Credit: Wikimedia Commons
The Thomas Viaduct spans the Patapsco River and Patapsco Valley between Relay, Maryland and Elkridge, Maryland, USA. It was commissioned by the Baltimore and Ohio Railroad (B&O); built between July 4, 1833, and July 4, 1835; and named for Philip E. Thomas, the company's first president. Some claim it to be the world's oldest multiple arched stone railroad bridge.U.S. Office of Archaeology and Historic Preservation. The National Register of Historic Places, vol, 1, p. 193. (Washington: Government Printing Office, 1972). However, the Sankey Viaduct on the Liverpool and Manchester Railway was opened in 1830, and finally completed in 1833. Read more on Wikipedia
Source: en.wikipedia.org