Skip to content

Pigeon Dung Possible Factor in Bridge Collapse


Inspectors began documenting the buildup of pigeon dung on the span near downtown Minneapolis two decades ago. Experts say the corrosive guano deposited all over the Interstate 35W span’s framework helped the steel beams rust faster.


Comment count on this article reflects comments made on Breitbart.com and Facebook. Visit Breitbart's Facebook Page.