Historic Bridges of the U.S.

Mission Creek Bridge (St. Louis County, Minnesota)
Built 1937
Steel arch bridge over Mission Creek on MN 23 in Duluth
Open to traffic

Sauk River Bridge (Stearns County, Minnesota)
Built 1931; replaced 2003
Lost truss bridge over Sauk River on MN 23 in Cold Spring
No longer exists

St. Louis River Bridge (St. Louis County, Minnesota)
Built 1919
Concrete arch bridge over St. Louis River on MN 23 in Duluth
Open to traffic