- 1865: 22 miles completed from Mendota to Merriam Junction, Minnesota by the Minnesota Valley Railway Company
- 1866: 17 miles completed from Merriam Junction to Belle Plaine, Minnesota by the Minnesota Valley Railway Company
- 1867: 16 miles completed from Belle Plaine to Le Sueur, Minnesota by the Minnesota Valley Railway Company
- 1868: 12 miles completed from Le Sueur to Kasota, Minnesota by the Minnesota Valley Railway Company
- 1869: 5 miles completed from Mendota to St. Paul, Minnesota by the Minnesota Valley Railway Company
- 1869: 22 miles completed from Kasota to Lake Crystal, Minnesota by the Minnesota Valley Railway Company
- 1869: 22 miles completed from Lake Crystal to St. James, Minnesota by the St. Paul and Sioux City Railroad
- 1869: 22 miles completed from Lake Crystal to St. James, Minnesota by the St. Paul and Sioux City Railroad
- 1870: Minnesota Valley Railway purchased by the St. Paul and Sioux City Railroad
- 1871: 58 miles completed from St. James to Worthington, Minnesota by the St. Paul and Sioux City Railroad
- 1872: 64 miles completed from Worthington to Le Mars, Iowa by the St. Paul and Sioux City Railroad
- 1881: StP&SC sold to the Chicago, St. Paul, Minneapolis & Omaha Railway
- 1882: CStPM&O leased by the Chicago & North Western Railway
- 1882: CStPM&O acquired by the Chicago & North Western Railway
- 1995: C&NW purchased by Union Pacific Railroad
- 1995-Present: Union Pacific operates the St. Paul to St. James segment as the Mankato Subdivision
- 1995-Present: Union Pacific operates the St. James to Sioux City segment as the Worthington Subdivision
02/25/23
Located on the south side of Alton, this small stone arch bridge crosses an unnamed creek.
Built in 1902, the bridge consists of a stone arch span. Relatively few stone arches exist on the Mankato-Sioux City segment of this route.
It is highly likely this span was built to replace an aging wooden trestle.
Overall, the bridge appears to be in good condition, with little notable deterioration.
The author has ranked the bridge as being locally significant, due to the common design.
The photo above is an overview. The bridge was accessed with permission.