This bridge is, like most historic railroad swing bridges over the Mississippi River, at risk for demolition and replacement. This is most unfortunate because this is a highly significant bridge. Its swing span of 460 feet is a long span example of its type. The truss configuration is quite unusual on the swing span as well. Many swing bridges have a truss arrangement quite different from fixed bridge due to the changing forces a swing span encounters when carrying load and when swinging open. However, this bridge is particularly unusual. The ends of the swing span have a Warren style truss configuration, but near the center "tower" portion this design loses its pattern and has a design that is difficult to categorize, but is somewhat like a Baltimore truss. Moreover, the tower portion of the bridge has a very narrow appearance compared to other swing bridges with a similar shape. In short, the swing bridge is fairly unusual in its design. The approach spans are noteworthy also. There is a traditionally composed Parker truss immediately east of the swing span. East of that, there is a lattice truss. Lattice trusses are in general rare, but were preferred by the original owner of this bridge, the Chicago and NorthWestern Railroad. East of this bridge, there is a second fixed longer bridge composed of many lattice truss spans. This other bridge is not yet documented by HistoricBridges.org. Additionally, only a few overview photos are available for this swing bridge. A revisit for better photos is planned.
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