|Bridge Name||Facility Carried / Feature Intersected||Location||Structure Type||Construction Date and Builder/Engineer|
Columbus Avenue Bridge
Washington Avenue Bridge / Warner Street Bridge
|Columbus Avenue Over Railroad (Norfolk Southern)||Pittsburgh: Allegheny County, Pennsylvania||Metal 8 Panel Rivet-Connected Warren Pony Truss, Fixed and Approach Spans: Metal Through Girder, Fixed||1907 By Builder/Contractor: Unknown|
|Rehabilitation Date||Main Span Length||Structure Length||Roadway Width||Main Spans||Approach Spans||NBI Number|
|1990||107 Feet (32.6 Meters)||237 Feet (72.2 Meters)||27.9 Feet (8.5 Meters)||2||1||27301000030220|
This bridge is extremely unusual because it features two spans set at largely different angles on the center pier resulting in a bridge of curved design, but whose curve is more like a turn at the center of the bridge. This unusual design is significant because it represents a form of design which would never be used in today's world of high speeds and semi truck traffic.
Sadly, this bridge suffers from several insensitive alterations. Historical significance is also hurt by this, which has had an adverse effect on the historic integrity of the structure. Numerous plates have been welded onto connections. Beams have been welded onto the top chord as well. Welds are also visible on some gusset plates. A number of rivets have been replaced with bolts.
Extensive cyclone fencing on the bridge is an extremely severe detriment to the aesthetic qualities of this bridge. These non-original alterations to the bridge could lead to the bridge being interpreted by the general public as an eyesore, even though the actual bridge itself is quite attractive with its unusual truss design.
Despite the fencing and the alterations to the structure, the bridge should still be considered for preservation because of its unusual curved/turning layout. The Pennsylvania Bridge Inventory gives the structure a fair review of its integrity, but does not even acknowledge the unusual configuration of the structure, and as such is an incomplete review.
Information and Findings From Pennsylvania's Historic Bridge Inventory
Discussion of Bridge
The skewed, 3-span, 236'-long bridge built in 1907 consists of 2 rivet-connected Warren with verticals and a built up thru girder approach span. The bridge is supported on concrete abutments, a built-up steel bent, and a concrete column bent with a steel cap beam. In 1990, the truss spans were extensively altered with steel members welded and bolted to all built-up members. Connections were changed at many lower panel points from rivets to bolts. As a result of welding, the bridge has lost integrity of original design. It is an altered example of a common bridge type and design with no innovative details. More than 125 Warren truss bridges have been identified by the survey. The bridge does not contribute to the PHMC-determined eligible Ft. Wayne Division of the Pennsylvania Railroad based on the loss of integrity of original design. More complete examples like 02 7301 0000 3081 survive.
Discussion of Surrounding Area
The bridge carries a 2 lane street and 1 sidewalk over 8 active Conrail tracks in an industrial area in the Manchester section of Pittsburgh's North Side. The railroad is the former Pennsylvania RR Fort Wayne Division line to Chicago, determined eligible by PHMC in 1993. The former manufacturing area is undergoing redevelopment. There is a large, modern post office shipping facility at the southeast quadrant and a late 20th century warehouse across the street from it. West of the bridge are scattered, early 20th century brick factories. The area lacks the cohesiveness to be a potential historic district.
Bridge Considered Historic By Survey: No
Click on a thumbnail or gallery name below to visit that particular photo gallery. If videos are available, click on a video name to view and/or download that particular video.
||A collection of overview and detail photos. This photo gallery contains a combination of Original / Full Sized photos and Mobile/Smartphone Optimized (Reduced Size) photos. Alternatively, view this photo gallery using a popup slideshow viewer by clicking the link below.
Browse Gallery With Popup Viewer
© Copyright 2003-2013, 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 of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.