This bridge is an extremely rare and important example of a genuine Pegram patent truss bridge that is known to be built according to the 1885 patent, as referenced on a plaque on the bridge. The bridge displays an arched portal bracing very similar to other genuine Pegram truss railroad bridges which are located in the state of Idaho. This bridge may very well be the most important historic bridge in the entire state of Utah. Utah has very few known historic bridges, and this railroad bridge is older than any National Bridge Inventory Highway listed bridge in the state. With so few examples of the rare and unusual Pegram truss left in existence, this bridge has great national significance. The Ogden Pegram Truss Railroad Bridge today appears to retain excellent historic and physical integrity with no major alterations noted.
The Ogden Pegram Truss Railroad Bridge may be the only Pegram truss still in use at its original location in the entire country. The bridge was built in 1897 by Edge Moor Bridge Works of Wilmington, Delaware. George Pegram worked for the Edge Moor Bridge Works for a time, but he had resigned from the company by 1885, so was not working for the company at the time this bridge was built, and Pegram was instead working as a railroad engineer for Union Pacific Railroad Company. It was likely in his capacity as a Union Pacific Railroad engineer, that he sought out his former employer in Delaware to fabricate and erect a bridge for Union Pacific in Ogden.
Be sure to view the national register nomination for Idaho Pegram truss bridges. Although a nomination for Idaho bridges, it actually includes a very detailed and comprehensive history of George Pegram and his trusses. A list of surviving Pegram truss bridges nationwide is offered, and this Utah bridge is mentioned.
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