Located between Chamberlain and Oacoma, this is the largest railroad bridge in South Dakota.
Built in 1953, this is a third generation bride at this location. The original bridge was a pontoon structure, constructed in 1907. This was replaced in 1923 with a through truss swing bridge.
In 1953, the Missouri River was dammed to create Lake Francis Case. As a result, the old swing bridge was removed and replaced with this structure.
The main spans on this bridge consist of massive 12-panel Camelback Through Trusses with riveted connections.
In addition to these main spans, a trio of 8-panel, riveted Warren Deck Trusses approach the main spans on the west of the bridge.
Along with the truss spans, an additional 29 deck girder spans exist. The entire bridge rests on massive concrete substructures.
Overall, the bridge remains in good condition. Recently, the State of South Dakota upgraded the bridge with a new deck.
The author has ranked this bridge as being regionally significant, due to the large scale size of the bridge.
The photo above is an overview. The photo below is a picture of the plaque. This bridge can easily be seen from Interstate 90.
| Upstream | Pierre Rail Bridge |
| Downstream | Yankton Rail Bridge |
