 Rushing waters from the Blue Earth River have already left a trail of debris and destruction on the edges of a southern Minnesota dam that partially failed last week. But officials acknowledged Tuesday the structure most in danger may be the bridge that looms nearby. The County Road 9 bridge is at risk of crumbling, and officials said they have little recourse. The threat to the 40-year-old bridge accelerated after a bout of heavy rain and flooding pummeled the Midwest for days. Now it may topple depending on the weather. Governor Tim Walz and Public Works Director Ryan Thilges.