Structure 28977 · Northumberland County, PA
Carries SR 54 over Trib.to Deleware Run, 3.5 Mi East Of Dewart.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work21 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.
| State | Pennsylvania |
| County | Northumberland |
| Location | 3.5 Mi East Of Dewart |
| Carries | SR 54 |
| Crosses | Trib.to Deleware Run |
| Coordinates | 41.12405, -76.82106 |
| Material | Concrete |
| Design | Slab |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 35.4 ft (10.8 m) |
| Deck Area | 69.1 sq m |
| Main Spans | 1 |
| Year Built | 1958 |
| Avg Daily Traffic | 2,296 (2023) |
| Truck Traffic | 21% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 3 — Scour critical |
| Structure Number | 000000000028977 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.