Photos #70 and #71 are incorrectly placed. Note the difference in portal bracing. These belong on this page.
http://www.bikeiowa.com/News/5623/inter-urban-trail-bridge-c...
Repaired recently, including the replacement of the trestle approaches. Looking at the westernmost pier, I can see why the piers were repaired.
Noting that this bridge was built by a small interurban, it appears that the trusses on this bridge are actually older than 1905. It also seems that there are two different designs on this structure.
This bridge:
http://bridgehunter.com/mn/hennepin/luce-line-trail/
was built by a major railroad but purchased and moved by a small electric railroad. It appears a similar situation may have happened here, and further research will be conducted.