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BH Photo #317656
I would agree; it appears to basically have the same configuration as a 2-span Pratt.
Maybe the engineers on here have a better handle on this one...
I am thinking that the diagonals are probably in tension and the curved girder is probably in compression.
I field visited this bridge today with the help of a manager at the golf course. He took me to the bridge. I also talked with a couple of golfers who were glad to see the bridge relocated to the course. This is an extremely significant bridge. There is another one like it in the county, but it was transferred to a landowner and is now private
I just added a PDF that discusses the relocation. This relocation did not affect the NRHP status of this bridge.
Darnell Plus http://www.historicbridges.org/info/darnell.htm indicates Canton ceased operation in 1917. 1925 is almost certainly incorrect. The Canton Bridge Company we are most familiar with was reorganized in 1891. This is the only one with a definitive date listed: http://bridgehunter.com/ne/pierce/C007012615/ and so I would say your suggested range, or a ca. 1910 date is the best that can be hoped for.
Thanks Nathan. I think I might have seen this one in the Kansas Historic Resources Inventory (KHRI) Database. I had a look at some similar structures here on Bridgehunter.
As far as a construction date, do you think that 1900-1915 is a likely range? NRHP claims 1925, but that seems a bit late to me. I would have expected to see a riveted Pratt pony or perhaps just a stringer by that time.
The bridge is a product of the Canton Bridge Company it has the distinctive inverted Kingpost diagonals (bridge is a hybrid of a lattice girder and inverted Kingpost truss) and retains the decorative flowers on the lattice.
My guess is that it is a true lattice truss due to the diagonal members that are visible just outside of the lattice work.
I understand that two pony trusses from the county were moved to the golf course for reuse. I have only been in Norton County a couple of times, so I am not really familiar with its bridges.
Found this bridge. Need help. Is this a true lattice truss bridge? Or a lattice girder. I don't think I know the difference between the two. Anyway, this bridge seems to be relocated from elsewhere.