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9th Street Bridge

Rachel Carson Bridge

9th Street Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 10, 2009 - May 21, 2021

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and Videos
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and Links

Facility Carried / Feature Intersected
9th Street Over Allegheny River
Location
Pittsburgh: Allegheny County, Pennsylvania: United States
Structure Type
Metal Through Plate Girder Stiffening Eyebar Chain Suspension, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Rehabilitation Date
1994
Main Span Length
410.0 Feet (125 Meters)
Structure Length
995.0 Feet (303.3 Meters)
Roadway Width
38 Feet (11.58 Meters)
Spans
1 Main Span(s) and 2 Approach Span(s)
Inventory Number
27301000020140

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 (Overview of All Three Sisters Bridges), PDF

The Ninth Street Bridge is one of three identical bridges that sit by side and are known as the "Three Sisters Bridges." They are unusual bridges due to the fact that instead of having cables, they use eye-bars. This gives them quite a different appearance from the average cable suspension bridge. Stiffening for the bridge is accomplished by through plate girders. They were the first examples of self-anchored suspension bridges, meaning the towers are rigid, and they hold the eye-bars, so no anchorage is needed.


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

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Photo Galleries and Videos: 9th Street 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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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: 9th Street 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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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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