Thomas Viaduct, Railway bridge in the United States of America
The Thomas Viaduct is an arched stone railway bridge spanning the Patapsco River between Baltimore County and Howard County.
Constructed in 1835, it is the oldest multiple-arched curved stone railroad bridge in the world still in use.
This viaduct was named after Philip E. Thomas, the first president of the Baltimore and Ohio Railroad (B&O).
Now part of the CSX Transportation system, the Thomas Viaduct continues to serve rail traffic.
Recognized as a National Historic Landmark, it has also been designated a Historic Civil Engineering Landmark.
Location: Baltimore County
Location: Howard County
Inception: 1835
Material: stone
Source: Wikimedia
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The Thomas Viaduct is an arched stone railway bridge spanning the Patapsco River between Baltimore County and Howard County.
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