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This Warren truss with vertical members is rivet connected, with large gusset plates. There is v-lacing on the diagonals. Lattice is found under the top chord and end posts.
Considering this bridge's massive chords and members as well as its 1927 construction date, this bridge has a very narrow roadway width of 17 feet. This is a bridge that was relocated in 1990 from Lowville in Erie County, Pennsylvania. Despite the fact that this move is in relatively recent history, little information is available about where it came from exactly. The bridge's massive members and narrow width almost make this bridge look like an old railroad bridge. If the bridge indeed was from Lowville, it is likely it originally crossed West Branch French Creek.
The Historic Bridge Inventory does not acknowledge this bridge's unusual design of massive members and narrow width. Furthermore, it claimed that the bridge should be "not eligible" for the National Register of Historic Places because it was relocated. Metal truss bridges, by their nature, lent themselves to being easy to relocate and reuse. From the earliest decades of the metal truss bridge through to the present day, when a truss bridge became insufficient for the roadway it served, they were sometimes relocated and reused elsewhere where traffic demands were less and the bridge could be more useful. The relocation of metal truss bridges is part of their history, and part of their identity. Metal truss bridges are therefore often granted eligibility or listing in the National Register of Historic Places even if they break the rule that the structure being considered eligible or listed should be in its original location. This exception is given because of the unique history of the metal truss bridge. It is unclear why the Historic Bridge Inventory did not acknowledge this.
Information and Findings From Pennsylvania's Historic Bridge InventoryDiscussion of Bridge The Leesburg Road Bridge, a steel, riveted, 5 panel pony truss structure, is supported on concrete abutments with flared wingwalls placed in 1990, as was the new concrete deck. The bridge was moved to its present location in 1990. The bridge is recommended as not eligible, due to its movement from another site, the alterations to the substructure, and the relatively common nature of the Warren pony truss. Other examples of the bridge type can be found in the state population. Discussion of Surrounding Area The bridge carries a single lane of a state road over Neshannock Creek in a sparsely developed, rural area with scattered 20th century residences. The bridge was moved to its present location in 1990 from Loweville in Erie County. Bridge Considered Historic By Survey: No Information From www.mercercotrussbridges.com Demolition Mitigation WebsiteDiscussion of Bridge The bridge was moved to its present location in 1990 from Loweville in Erie County. It is a standard-design, riveted Warren Truss bridge with a concrete deck. |
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