In 1876, the Corps of Engineers finished a massive concrete wall under the Mississippi River at St. Anthony Falls. It stands three stories tall and spans the river. It is an essential piece of Twin Cities infrastructure that no one can see and few know exists. It safeguards Minneapolis’ water supply and helps ensure the river doesn’t undermine bridges or other infrastructure. No one has inspected it for 145 years and no one accepts ownership. How much longer will it last? Retired Park Superintendent John Anfinson of the Mississippi National River and Recreation Area will share his concerns for this critical piece of our local infrastructure.

Update: Due to COVID-19 restrictions, this talk will be held exclusively on Zoom. E-mail [email protected] for further information.