Patterson Viaduct
| Patterson Viaduct | |
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Patterson Viaduct Ruins, 1970
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| Coordinates |
39°14′56″N 76°45′53″W / 39.248889°N 76.764722°WCoordinates: 39°14′56″N 76°45′53″W / 39.248889°N 76.764722°W |
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Patterson Viaduct Ruins
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| Nearest city | Ilchester, Maryland |
| Area | 2 acres (0.81 ha) |
| Built | 1829 |
| Built by | Wever, Caspar; McCartney, John |
| Architectural style | Masonry Arch Bridge |
| NRHP reference # | 76002221 |
| Added to NRHP | June 3, 1976 |
| Crosses |
Patapsco River (before 1868) |
| Locale | Ilchester, Maryland |
| Official name | Patterson Viaduct |
| Characteristics | |
| Design | Arch bridge |
| Total length | 360 feet (110 m) |
| Longest span | 55 feet (17 m) |
| Clearance below | 43 feet (13 m) |
| History | |
| Opened | December 1829 |
| Closed | 1868 |
39°14′56″N 76°45′53″W / 39.248889°N 76.764722°WCoordinates: 39°14′56″N 76°45′53″W / 39.248889°N 76.764722°W
The Patterson Viaduct was built by the Baltimore and Ohio Railroad (B&O) as part of its Old Main Line during May to December 1829. The viaduct spanned the Patapsco River at Ilchester, Maryland. It was heavily damaged by a flood in 1866 and subsequently replaced with other structures.
The viaduct was constructed during the first building phase of the railroad, which extended from Baltimore, Maryland, to Ellicott's Mills. The Patterson, the third bridge built for the B&O, was similar in construction to the company's first bridge, the nearby Carrollton Viaduct and was named for B&O director William Patterson. It was designed by Caspar Wever and built under the supervision of John McCartney, one of Wever's assistants. (McCartney's good work on the Patterson Viaduct was later rewarded with the contract to build the 1833-35 Thomas Viaduct.)
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