Builder's plate in photo 2 has 1891. There have probably been repairs to substructure, perhaps even replacement spans, at later times.
In my research I got two contradicting dates of when the bridge was destroyed First date is 1906 according to Yakima Museum. The other is 1964 based on the Whitnall family. They claim that their dad, Jack Whitnall was working for Boise Cascade as promo-man and took this picture at the same time.
I would like to verify this. Any help would be apppreciated
BTW I have family permission to post this picture.