Minnesota Department of Transportation

511 Travel Info

Historic Bridges

Oronoco Bridge (Bridge 448)

Oronoco Bridge (Bridge 448)

Oronco bridge

Design and construction of a reinforced concrete arch
main span, which exceeds the typical length for its
bridge type.

History and significance

The Oronoco Bridge is an open-spandrel concrete-arch bridge that carries Minnesota Avenue (County Road 18) across the Middle Fork of the Zumbro River located in the city of Oronoco in Olmsted County. It was built in 1918 and is significant for its unusually long main span length.


City of Oronoco (Olmsted County)
Latitude, Longitude: 44.16244944, -92.53484377