This bridge is a good example of a deck cantilever truss bridge. A wide structure, it is configured as two superstructures (each having two truss lines) sitting directly beside each other on a single shared substructure. To see how this is the case, stand directly under the bridge and look up, to see not only four truss lines, but a tiny gap between each superstructure's deck.
The bridge includes a 236.5 foot suspended span. The suspended span follows a modified Warren truss configuration, while Pratt truss thinking is evident in the remaining truss system. The eastern end of the bridge has an approach system which includes an interesting "Y" detail to accommodate a ramp.
This bridge is a later example of deck cantilever truss bridge technology but thanks to widespread nationwide demolition of this bridge type, this bridge is increasingly rare and significant. Equally rare is the fact that PennDOT chose to extensively rehabilitate this bridge rather than demolish and replace the bridge. Its a nice change. There were however a number of alterations made. Numerous rivets were replaced with bolts. Additionally, the suspended span hanger and the tension anchorage bearings at the ends of the truss were both supplemented with an additional system.
While it is not known if they were the on-site contractor for this bridge, shop drawings for this bridge were prepared by the Pittsburgh - Des Moines Steel Company of Pittsburgh, Pennsylvania indicating the fabricator of the superstructure.
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|
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|
Coordinates (Latitude, Longitude):
View Bridge Location In:
© Copyright 2003-2021, 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.