This unique Whipple Through Truss bridge crosses the Marais des Cygnes River near the largely abandoned town of Amoret, Missouri.
The bridge is one of the most unique in the region, and is likely the latest constructed Whipple Through Truss in the United States.
Whipple Trusses were originally patented by Squire Whipple in 1853, and were largely popular on railroads between the 1860s and 1890. These large scale spans were durable, simple and made great spans on large bridges.
However, virtually every Whipple Truss ever constructed features pinned connections.
There is one exception to every generalization. This bridge is that exception.
It features a large 11 panel, 235 foot long riveted Whipple Through Truss. This span contains less counter braces than an 1800s Whipple span, likely due to the immense construction.
In addition, a through girder span approaches the structure on either side. The entire bridge rests on concrete substructures, adding to the authenticity of the rare design of this bridge.
Even more curious than the design is the builder. Waddell & Hedrick of Kansas City was consulted to design the structure. John Alexander Low Waddell was a proponent of simple and durable truss designs. One of the biggest mysteries about this bridge is why the design was chosen, when it was outdated and the engineering firm did not agree with it's use in other projects.
Despite all the oddities, this bridge can be described as a must see bridge on the regional level. It is the only known Whipple Truss designed after 1900, and is also the only such in existence with riveted connections.
Due to the unique features and oddities, the author has ranked the bridge as being nationally significant.
Additional rehabilitation has been added to the bridge as well, which includes such work as additional steel on the frame of the truss. The bridge appears to be an extremely healthy structure.
Access to the bridge can be made from the northwest quadrant, where a gravel road leads to the bridge.
The photo above is an overview, and the photo below is a photo of the builders plaque.
| Upstream | Boicourt Rail Bridge |
| Downstream (Main Channel) | MNA Marias des Cygnes River Bridge (S) |
| Downstream (Old Channel) | MNA Marias des Cygnes River Bridge (N) |
