Thanks for the fill-in on the history of this bridge, both with its portal bracing and the overall structure in general. I was unaware of the bridge's history, only knowing that it was originally built in 1877 somewhere near Sauk City and relocated three times since...they did a nice job with the duplication of the original bracing. It would have been nice to include the curved knee braces too.
In response to Matt Lohry's comments about the portal bracings on the bridge, here is my opinion about the bridge that is worth noting. Not exactly similar to the original but awfully close enough: