Smithfield Street Bridge
| Smithfield Street Bridge | |
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Smithfield Street Bridge
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| Carries | 4 lanes of roadway 2 pedestrian walkways |
| Crosses | Monongahela River |
| Locale | Pittsburgh, Pennsylvania |
| Characteristics | |
| Design | Lenticular truss bridge |
| Total length | 1,184 feet (361 m) |
| Longest span | 2 spans, 360 feet (110 m) each |
| Clearance below | 42.5 feet (13.0 m) |
| History | |
| Opened | March 19, 1883 |
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Smithfield Street Bridge
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| Location | Smithfield St. at the Monongahela River, Pittsburgh, Pennsylvania |
| Coordinates | 40°26′5″N 80°0′8″W / 40.43472°N 80.00222°WCoordinates: 40°26′5″N 80°0′8″W / 40.43472°N 80.00222°W |
| Area | 1 acre (0.40 ha) |
| Built | 1883 |
| Architect | Gustav Lindenthal |
| Architectural style | Other, Romanesque, Pauli truss |
| NRHP Reference # | 74001745 |
| Significant dates | |
| Added to NRHP | March 21, 1974 |
| Designated NHL | May 11, 1976 |
| Designated CPHS | February 22, 1977 |
| Designated PHLF | 1970 |
The Smithfield Street Bridge is a lenticular truss bridge crossing the Monongahela River in Pittsburgh, Pennsylvania, USA.
The bridge was designed by Gustav Lindenthal, the engineer who later designed the Hell Gate Bridge in New York City. The Smithfield Street Bridge was built between 1881 and 1883, opening for traffic on March 19, 1883. It was widened in 1889 and widened again in 1911. The bridge has been designated a National Historic Civic Engineering Landmark, a National Historic Landmark, and has a Historic Landmark Plaque from the Pittsburgh History and Landmarks Foundation.
The present bridge is the third bridge at the site and remains the second oldest steel bridge in the United States. In 1818, a wooden bridge was built across the Monongahela by Louis Wernwag at a cost of $102,000. This bridge was destroyed in Pittsburgh's Great Fire of 1845. The second bridge on the site was a wire rope suspension bridge built by John A. Roebling. Increases in both bridge traffic and river traffic eventually made the lightly built bridge with eight short spans inadequate. The present Lindenthal bridge was built in its place, using the Roebling bridge's stone masonry piers.
The Smithfield Street Bridge is the penultimate of the many bridges which span the Monongahela before the river joins with the Allegheny River to form the Ohio River at Downtown Pittsburgh. The Fort Pitt Bridge is further downstream of it.
The bridge also served the Pittsburgh Railways streetcar system with lines coming from the Mt. Washington Transit Tunnel and from Carson Street crossing the bridge and continuing into downtown along Grant Street and Smithfield Street, returning to the bridge via Wood Street or Grant Street. The tracks occupied the eastern half of the bridge. The streetcar line was abandoned in July 1985, when the streetcars were diverted to the Panhandle Bridge and the new light rail subway, on July 7. The last day of streetcar service on downtown Pittsburgh streets and over the Smithfield Street Bridge was July 6, 1985, although the final crossing of the bridge by a streetcar did not take place until 1:40 a.m. on July 7. The former streetcar right-of-way was then converted into a paved roadway for northbound traffic.
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Wikipedia