Located east of Kellogg, this large deck girder bridge crosses Rock Creek.
Built in 1912 using a host of secondhand material, the bridge consists of three deck girder spans set onto concrete substructures.
The center span has a plaque giving a date of 1912, and was constructed by American Bridge Company. The east approach was constructed by Lassig Bridge & Iron Works at an unknown location in 1890 and moved here. The west approach was built in 1888 by the same builder.
In addition, the two deck girder approaches consist of four girders each, known as twinned girders. Additional plaques may exist on these approaches that were not found.
Twinned deck girder spans are rather common on railroads. The method of construction involved using a single deck girder, and adding scrap girders inside to create a doubled girder.
A lack of bridge information for the Rock Island will prevent further research from being conducted. The author is currently seeking information on the original locations of the girder approaches.
Overall, the bridge appears to be in fair to good condition.
The author has ranked this bridge as being moderately significant, due to the common design and extensive use of secondhand pieces.
The photo above is an overview.