Slightly west of this bridge is the site of the bridge it replaced which crossed the creek at the west end of Falls Park. This was what looked like a five span pony truss and was described in photo notes as "iron". Photos of it are at http://libx.bsu.edu/cdm4/results.php?CISOOP1=all&CISOBOX1=bi...
I shall have to look for signs of the old bridge when I get to have the chance. It would also be nice to obtain permission to post some of the old photos from the Pendleton Historical Museum who holds the rights.
The original railroad bridge was a combination covered and trestle wooden span and the steel pony trusses replaced it using the same abutments and piers. The Southern abutment remains and is directly across the street from the museum. The Northern abutment may also remain...hidden in the trees, but the piers have all vanished.
There was also a rather long WIBCo bowstring through truss and a 2-span Pratt truss interurban bridge just to the West on Pendleton Avenue. The bowstring replaced an earlier covered span as well.