This next mystery bridge takes us to New York; specifically, Fort Plain in Montgomery County and to this bridge. The structure spanned Mohawk River at River Street in the business district. The bridge features Phoenix columns and records indicated that the contractors, Dean and Westbrook of New York City as well as the Phoenix Bridge Company of Phoenixville, Pennsylvania were responsible for building the structure, which was between 130 and 180 feet. Yet it is unknown when the bridge was built. We do know that it was replaced in 1932 with a polygonal Warren through truss bridge with WV-portal bracings and riveted connections.
What is unknown and unusual is the truss design. When it comes to hybrid truss bridges, these bridges are hard to find for they serve traffic for a short period of time before they are demolished. The first bridge that comes to mind is the Philipp’s Mill and Crossing near Rockville, Iowa. It was a combination of Kellogg, Thacher and Warren through truss span that was a product of the Wrought Iron and Bridge Company. It was built in 1878 but replaced in 1958.
For this bridge, it appears to be a combination of Parker, Camelback and Pennsylvania Petit through truss bridge, which is unusual for a truss design. Yet others in the bridge community would have a better idea if this inquiry was posted……
….which is why I’m posting it right now. What kind of truss bridge was this bridge and when was the bridge built?
Feel free to comment. Additional information on the bridge’s history is more than welcome, especially as bridgehunter.com has no information nor photos on the truss bridge replacement built in 1932.