Dana, after looking at historic maps available on the internet, I'm pretty confident in saying it's the crossing of Walnut Creek on the same road, as there are buildings close to the bridge in both the picture and on the map:
http://www.historicmapworks.com/Map/US/470912/Olin/Jones+Cou...
Maybe crossiing due South? Luke might not be correct local, save image then Ill delete. Rather have accurate. If info on south crossing becomes available or you are sure its this one add back in. Thanks for all you do for bridgehunter!
Dana, the bowstring in the picture you added is a single-span, which would make it an un-added span over Walnut Creek.
Great find!
Thanks You're the man!