Marsh Creek Rainbow Arch / Cambria Rainbow Bridge (Bridge 90554)
History & significance
The Marsh Creek Rainbow Arch Bridge is a reinforced-concrete through arch bridge that was constructed in 1911 to carry County Road 101 over the Little Cottonwood River in Blue Earth County. It is currently closed to all traffic and spans a dry creek bed. The bridge is listed in the National Register of Historic Places as an early example of James Marsh’s patented reinforced-concrete through arch design. It is also significant as the oldest documented Marsh rainbow arch in the state and likely the first example of Marsh’s “Marsh arch” design nationally.
Cambria Township (Blue Earth County)
Latitude, Longitude: 44.23664634, -94.36033636