Here in Humboldt we call it the Bloody Run.
P.S. I think your site is wonderful. I am putting a link to your site on our Humboldt County Historical Assn web site www.humboldtiowahistory.org
Hope that is okay with you.
The old farm home near the bridge belongs to Polly Berkheimer who grew up there. I visited Polly in 2007 when she was 93 because I found I'm related to her. My grandparents were married on this farm in 1902. This is a very beautiful spot.
I jumped from it... I grew up in the town around the 70's. Never really thought of the bridge as historical..just thought, "Oh man, we have to drive over the bridge that might collapse" when I was a kid. Humboldt is a beautiful town with much more to offer than see!! I wish I could have raised my own child there.