In 1917 this bridge replaced an earlier bridge composed of two 132-foot Pratt through trusses (I assume, with approach spans). There is a photo of the earlier bridge (apparently in the process of being replaced) in the book "From Sawmills to Sunfish" on page 175. The far truss seems to be in the process of being dismantled, and a recognizable pier for the current bridge is in the river on the near side of the former center pier.
Does anyone know of any other photos of the earlier bridge? Thank you.
Here is the page from the book Mr.Gordon-Gilmore mentioned:
http://murphylibrary.uwlax.edu/digital/lacrosse/OnalaskaSawm...