|
Key Facts |
Bridge Name | Type | Road | Location | City | Crossing |
| Dunbar Bridge | Truss | Valleyview Road | Washington County, PA | Rural | Raccoon Creek |
|
Technical Facts |
|
Construction Date |
Structure Length | Deck Width | Builder |
| 1904 | 59 Feet | 13 Feet | Fort Pitt Bridge Works of Pittsburgh, PA |
This bridge is a bit different looking than the other pony trusses I found in Washington County, an observation that the historic bridge inventory didn't care to mention. Actually, they must not have even visited the bridge, as they didn't list the builder, which is clearly visible on builder plaques on the bridge. The bridge retains a high degree of historic integrity, and is in my opinion a good example of the company's post 20th century work. The bridge is also skewed.
Information and Findings From Pennsylvania's Historic Bridge InventoryDiscussion of Bridge The single-span, 59'-long and 13' wide, riveted Pratt pony truss bridge built in 1904 is supported on concrete abutments with wingwalls that have been placed in front of ashlar abutments. The trusses are traditionally composed. Lateral stability is provided by original outriggers, and the original short laced railings are in place inside the truss lines. The bridge exhibits no unusual or distinctive details. It reflects the standardization of truss bridges that came to dominate after 1895. Riveted field connections were common by 1900. Neither the bridge nor its contexts are historically or technologically significant. Discussion of Surrounding Area The bridge carries one lane of a two-lane road over a stream in a rural area of active farms. Bridge Considered Historic By Survey: No |
