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Liberty Bridge

Liberty Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 10, 2009, July 21, 2019, and October 2, 2021

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Facility Carried / Feature Intersected
Crosstown Boulevard (Liberty Avenue) Over Monongahela River
Location
Pittsburgh: Allegheny County, Pennsylvania: United States
Structure Type
Metal Cantilever 18 Panel Rivet-Connected Pratt Deck Truss, Fixed and Approach Spans: Metal 10 Panel Rivet-Connected Pratt Deck Truss, Fixed
Construction Date and Builder / Engineer
1928 By Builder/Contractor: Independent Bridge Company of Pittsburgh, Pennsylvania
Rehabilitation Date
1983
Main Span Length
450.0 Feet (137.2 Meters)
Structure Length
2,663.0 Feet (811.7 Meters)
Roadway Width
56 Feet (17.07 Meters)
Spans
4 Main Span(s) and 12 Approach Span(s)
Inventory Number
2306901100135

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF

This is an impressive, large deck truss structure. It consists of two main cantilever spans and the bridge has sixteen total spans. Its aesthetic qualities arise from its cantilever design and extensive v-lacing and lattice on is members, nearly all of which are built-up.

The bridge was important in the development of Pittsburgh, along with the bridge's obstacle-eliminating companion, the Liberty Tunnels, since it connected important parts of the city.

This bridge once was even more impressive than it is today, having once had ornate railings and piers that originally continued their design to up above the roadway to form decorative pillars. These alteration arose out of a 1983 project to widen the bridge beyond its original 38 foot configuration by cantilevering out the deck. This project makes the reason for removing the pier extension obvious, but why the original railings were not simply reused on the new sidewalk remains unclear, since the pedestrian railings are separate of the vehicular barriers and need not be crash-resistant. These alterations were severe, but do not significantly diminish the importance of this bridge and its continued preservation, given the large bridge engineering significance of the structure, its contribution as a member of the large group of magnificent historic bridges in downtown Pittsburgh, and numerous remaining aesthetic qualities of the bridge.


This bridge is tagged with the following special condition(s): Unorganized Photos

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Photo Galleries and Videos: Liberty Bridge

 

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Bridge Photo-Documentation

Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer.
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View Photo Gallery

Bridge Photo-Documentation

Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer.
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View Photo Gallery

Additional Unorganized Photos

Original / Full Size Photos
A supplemental collection of photos that are from additional visit(s) to the bridge and have not been organized or captioned. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer.
Alternatively, Browse Without Using Viewer

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View Photo Gallery

Additional Unorganized Photos

Mobile Optimized Photos
A supplemental collection of photos that are from additional visit(s) to the bridge and have not been organized or captioned. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer.
Alternatively, Browse Without Using Viewer

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Maps and Links: Liberty Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Additional Maps:

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GeoHack (Additional Links and Coordinates)

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Flickr Gallery (Find Nearby Photos)

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Directions Via Sygic For Android

Directions Via Sygic For iOS and Android Dolphin Browser

USGS National Map (United States Only)

Historical USGS Topo Maps (United States Only)

Historic Aerials (United States Only)

CalTopo Maps (United States Only)


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