Structure 9545 · Centre County, PA
Carries SR 504-pa 504 over Dewitt Run, Unionville.
23 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 box-beam bridge.
| State | Pennsylvania |
| County | Centre |
| Location | Unionville |
| Carries | SR 504-pa 504 |
| Crosses | Dewitt Run |
| Coordinates | 40.92337, -77.89975 |
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 23.0 ft (7 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 29.5 ft (9 m) |
| Deck Area | 63 sq m |
| Main Spans | 1 |
| Year Built | 1934 (reconstructed 1984) |
| Avg Daily Traffic | 254 (2024) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2024 |
| 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 | 000000000009545 |
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.