Yup.....forgot about Lassig, as they used that design some too. I would suspect given the location that F&B would be more probable as that seems closer to their region.
Anthony - you read my mind! I suspect that either Farnsworth and Blodgett or perhaps M. Lassig could possibly be responsible for this one.
I remember seeing that span sitting next to the entrance of Fort Richardson State Park when I went there for a Volksmarch sometime in the 1986-1987 timespan. I was stationed at Fort Sill, Oklahoma at the time. I even have a picture of it somewhere in my photo albums, as I thought it was odd sitting there, nowhere close to any stream. I believe that I read somewhere that it was an old railroad span from somewhere near Jacksboro, as many years ago, several railroads apparently ran through there. I remember seeing the roadbed for one still visible near town. I confirmed this by looking in a copy of a 1928 railroad atlas. Doesn't look like much has changed.
It's a Warren-Quadrangular (Quadruple-intersecting Warren truss)
The pedimented portal bracing looks similar to those built by Farnsworth & Blodgett.
just found this bridge. need help here. is it a whipple, double intersection warren, trip. intersection warren, or other? who made it? any other information would help.