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Although the historic bridge inventory didn't seem to take notice, this is actually an unusual bridge. It has an unusual riveted curb that extends well below the deck, riveted to the vertical members. Perhaps the curb was designed to stabilize and brace the truss somewhat, in addition to providing the curb function. The bridge also is an uncommon example of a bridge in which the bottom chord is located below the floorbeams, rather than above. Finally, the bridge is noteworthy as an uncommon example of a pin-connected truss bridge with a skew, in the case of this bridge, a 22% skew.
Information and Findings From Pennsylvania's Historic Bridge InventoryDiscussion of Bridge The ca. 1908, pin connected, single span, 102'-long, Pratt pony truss bridge with the floor beams above the lower chords is supported on ashlar abutments with flared wingwalls. The upper chords and verticals are built up members, and the lower chords and diagonals are eye bars. The bridge, one of nine pin connected truss bridges remaining in Armstrong County, is a late and undistinguished example of its technology. It has no innovative or distinctive details, and it reflects the standardization of the design. Neither the bridge nor its setting is historically or technologically significant. Discussion of Surrounding Area The bridge carries a 1 lane unimproved road over a stream in a rural area of active farms and scattered 20th century residences. The setting does not have rural historic district potential. Bridge Considered Historic By Survey: No |
This historic bridge has been demolished. This map is shown for reference purposes only.
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