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This bridge was built in 1904 and is an uncommon example of a pin-connected Camelback railroad truss. Aside from the uncommon use of the Camelback truss design, the bridge is traditionally composed. The bottom of the portal bracing appears to have been replaced/altered perhaps to increase vertical clearance on the bridge. The bridge is also noted for its skew, uncommon for pin-connected truss bridges.
Information and Findings From DHPA Historic Bridge SurveyStatement of Significance The heaviness, skewing, diagonal reversal, and truss pattern are all unusual features of this structure. The span retains its original members and substructure. Architectural Description Seated upon cut stone abutments and wingwalls, this single-span pin-connected Camelback is divided into seven panels by verticals of reverse channels laced to one another. The heaviness of the structure is evident in the crafting of the channels and the cover plates used for the endposts and top chord. Heavy diagonals (reversed laced channels) pinned midway into the endposts stabilize the abutment panels which are of different size to adjust for off-setting the south truss by about 6' to the west. The use of cylindrical and die-forged eyebars as diagonals in the three center section panels is reversed in the opposite truss: Double die-forged eyebars are countered with cylindrical ones with turnbuckles (doubled in the most central panel). The top chord for each of the two side panels has a different slope. The typical and yet heavier double die-forged eyebars angle from the top pins downwards towards midspan, although the panel close to the center section also has an adjustable counter. The heavy girder floor beams are riveted to the vertical above the lower chord. They, in turn, have heavy girder stringers riveted to the floor beams. Bridge Considered Historic By Survey: Yes |
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