Home History 30-Second Minnesota: The Scoop on the Stone Arch Bridge 30-Second Minnesota: The Scoop on the Stone Arch Bridge By TPT Originals May 17, 2019 Who built the only stone-arch bridge to cross the entire Mississippi? Hint – he was one of the wealthiest Americans of his time. Discover more bite-sized state history stories by checking out our 30-Second Minnesota series. UP NEXTMORE FROM AUTHOR Reflections on 9/11: “I look at it as my Pearl Harbor.” Minnesota’s Iron Range Mines a New Industry What’s in a name? Afton is as ‘sweet’ as it gets.