This newer through girder bridge crosses the W. Fork Nishnabotna River parallel to 320th Street in Manilla.
Built in 1941 to replace a similar bridge, the bridge features a single through girder span, set onto steel pile substructures. In addition, the bridge is approached by a number of trestle spans. These are set onto timber substructures.
It is unknown why the previous bridge was replaced in 1941, but it likely stems from a channelization of the river. The through girder was originally set onto timber piles as well, but these were replaced in the 1980s or 1990s.
Overall, the bridge appears to be in good condition. Many of the structures along the Manilla-Council Bluffs section have been significantly upgraded since the fall of the Milwaukee Road and subsequent sale to Burlington Northern, leaving them in good overall condition.
The author has ranked the bridge as being minimally significant, due to the newer age and common design.
The photo above is an overview.