Bridge over Coon River - Perry, IA
Photo uploaded by Art S
View this photo at ebay.com
BH Photo #351158
Not a bowstring expert, but I think looks like the Wolf bridge as well. The plaques appear to be in the same spots, an it appears there was more than one span.
I have a feeling this may be a shot of Wolf Bridge and https://bridgehunter.com/ia/dallas/bh71754/ may be Hall Bridge, but I've yet to find a picture to confirm.