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These unique bridges that cross this railroad in Noble County should be a rail-fan's delight, as these bridges cross an extremely busy railroad line.
The bridge is a three span warren pony truss with riveted connections, composed of one main span and a shorter approach span at each end. The approach structures sit at a slight incline, something not commonly seen with other small metal truss bridges. The bridge is seated on concrete abutments, and the main span is supported by steel truss supports. V-lacing is present on the diagonals and on the bottom chord. The bridge is posted for a 6 ton weight limit. Original gas pipe railings remain on the bridge. These railings include couplings that have the name "Dart" on them which refers to E. M. Dart Manufacturing Company. An advertisement from the company is shown to the right.
This bridge seemed to have a steeper and higher elevation than some of the other similar bridges in the county, and county officials would likely site the horribly low visibility as a reason for demolishing this structure. However, a better option would be making the dirt approaches longer and less steep, and/or lowering speed limits for increased safety across the bridge. Under no circumstances should the demolition of such an interesting and beautiful structure be considered.
The bridge is listed as having a 10 degree skew. As a light amount of skew on a pony structure, this is not particularly noticeable.
Information and Findings From DHPA Historic Bridge SurveyStatement of Significance A number of features distinguish this bridge: the use of some pin connections, the absence of verticals, and the design of the endposts and top chords. The undecorated spans retain their original members. Architectural Description Concrete abutments and crafted I beam piers support the three-span Warren pony truss. The structure extends 106'8" in two triple and one quadruple panel span. The top chords and endposts are made from a pair of heavy angles riveted together with a cover plate and its diagonals from a pair of laced angles. Verticals are omitted. The I floor beams are U-bolted to gusset pins below the lower chord and carry the timber deck with its 16'9" roadway. Bridge Considered Historic By Survey: Yes |
This bridge is tagged with the following special condition(s): Unorganized Photos
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