Visit - Thomas Viaduct spans Patapsco River and Patapsco Valley between Relay and Elkridge Maryland

 Photo 1 Copyright 2020 Katherine S. Kalis

Visit

Commissioned by the Baltimore and Ohio Railroad and completed in 1835, it was the largest railroad bridge in the United States and the first multi-span masonry railroad bridge to be built on a curve. It has been designed a National Historic Civil Engineering Landmark. It was named for the B&O's first president, Philip E. Thomas

   Photo 2 Copyright 2020 Katherine S. Kalis

Thomas Viaduct

Photo 3 Copyright 2020 Katherine S. Kalis
Thomas Viaduct

Photo 4 Copyright 2020 Katherine S. Kalis
Thomas Viaduct