K-Truss Bridge

TYB: In connection with a forthcoming article on another truss bridge type, I would like to take you back to this article I wrote in 2013 on the K-truss bridge. Designed by Phelps, this design was used extensively in the western half of the US as well as some parts of Pennsylvania and Europe between the 1910s and 1950s. Surprisingly they were also used to rebuild bridges destroyed during World War II and some examples can still be seen today. Since its release, this has been the most visited and commented article. Enjoy the article 🙂

The Bridgehunter's Chronicles

Before I go into the topic on K-truss bridges, the second of many to come in a series on unusual bridge designs, I would like to tell you how I managed to come across this bridge, located over the Monongahela River near the town of Speers in western Pennsylvania. I did a paper on this subject during my time of my Master’s studies at the University of Jena in eastern Germany and sent out a request on the topic of K-truss bridges to the Bridge Mafia, as Eric DeLony coined it- a group of hundreds of bridge experts with a vast knowledge of bridges, history and preservation.  Already I knew of the number of K-trusses that existed in Oklahoma, according to Wes Kinser’s website on Oklahoma’s historic truss bridges. Yet I did not know that there was a bridge like this, built in the 1920s carrying the Wabash-Erie Railroad. Given…

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