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Key Facts |
Bridge Name | Type | Road | Location | City | Crossing |
| Wampum Road Bridge | Truss | Wampum Road (Old SR-18) | Lawrence County, PA | Rural | Mahoning River |
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Technical Facts |
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Construction Date |
Structure Length | Truss Span Length | Deck Width |
| 1932 | 369 Feet | 257 Feet | 32 Feet |
I wish the early morning light had been better at this bridge, as it was one of my favorites of the 20s/30s era truss bridges. The reason I liked this bridge is not only does it have a Parker configuration and a fair amount of v-lacing, but it has a cool skew to it. I found a number of 20s and 30s Pratt through trusses in Pennsylvania that were skewed, but among the Parker trusses, this was the only skewed example I found. The skew is very heavy and pronounced on this bridge as well.
Information and Findings From Pennsylvania's Historic Bridge InventoryDiscussion of Bridge The skewed, 3-span, 369'-long bridge is composed of a riveted, 257'-long steel Parker truss main span and stringer approach spans. It is supported on a concrete substructure. The bridge was built to a state design in 1932, and the trusses are traditionally composed with built up box section end posts and chords. The diagonal members are built up. Metal railings are used inside the truss line and on the cantilevered sidewalk. The portal braces are massive because of the extreme skew of the bridge. The bridge has no innovative or distinctive details, and it is typical of the department's designs of the period. Neither the bridge nor its setting is historically or technologically significant. Discussion of Surrounding Area The bridge carries a two-lane road and a cantilevered sidewalk over the Mahoning River in a wooded setting. Bridge Considered Historic By Survey: No |
