HistoricBridges.org Menu: HistoricBridges.org Menu:


We Recommend These Resources:
Bach Steel - Experts at historic truss bridge restoration.

HistoricBridges.org: Bridge Browser

7th Street Bridge

Andy Warhol Bridge

7th Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 12, 2004 and July 16, 2011

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
7th 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
Construction Date and Builder / Engineer
1926 By Builder/Contractor: American Bridge Company of New York, New York

Technical Facts

Rehabilitation Date
1993
Main Span Length
422 Feet (129 Meters)
Structure Length
1,061 Feet (323 Meters)
Roadway Width
38 Feet (11.58 Meters)
Spans
1 Main Span(s) and 2 Approach Span(s)
NBI Number
27301000020130

Historic Significance Rating (HSR)

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 Seventh 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.

Divider

Photo Galleries and Videos: 7th Street Bridge

 
View Photo Gallery
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. Alternatively, Browse Without Using Viewer
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. Alternatively, Browse Without Using Viewer

Divider

Maps and Links: 7th Street Bridge

Coordinates (Latitude, Longitude):

View Bridge Location In:

Bridgehunter.com: View listed bridges within a half mile of this bridge.

Bridgehunter.com: View listed bridges within 10 miles of this bridge.

Google Maps

Google Streetview (If Available)

Bing Maps

OpenStreetMap

Apple Maps (Via DuckDuckGo Search)

Apple Maps (Apple devices only)

MapQuest

HERE We Go Maps

ACME Mapper

Waze Map

Android: Open Location In Your Map or GPS App

Flickr Gallery (Find Nearby Photos)

Wikimedia Commons (Find Nearby Photos)

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)

CalTopo Maps (United States Only)


Divider
 
Home Top

Divider

About - Contact

© Copyright 2003-2020, HistoricBridges.org. All Rights Reserved. Disclaimer: HistoricBridges.org is a volunteer group of private citizens. HistoricBridges.org is NOT a government agency, does not represent or work with any governmental agencies, nor is it in any way associated with any government agency or any non-profit organization. While we strive for accuracy in our factual content, HistoricBridges.org offers no guarantee of accuracy. Information is provided "as is" without warranty of any kind, either expressed or implied. Information could include technical inaccuracies or errors of omission. Opinions and commentary are the opinions of the respective HistoricBridges.org member who made them and do not necessarily represent the views of anyone else, including any outside photographers whose images may appear on the page in which the commentary appears. HistoricBridges.org does not bear any responsibility for any consequences resulting from the use of this or any other HistoricBridges.org information. Owners and users of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.

Divider