Structure 12743 · Columbia County, PA
Carries SR 4033 Br. over Over Wolfhouse Run, 2 Mi N Of Sereno.
21 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 | Columbia |
| Location | 2 Mi N Of Sereno |
| Carries | SR 4033 Br. |
| Crosses | Over Wolfhouse Run |
| Coordinates | 41.18766, -76.50742 |
| Material | Concrete |
| Design | Slab |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 27.6 ft (8.4 m) |
| Deck Area | 53.8 sq m |
| Main Spans | 1 |
| Year Built | 1952 (reconstructed 1988) |
| Avg Daily Traffic | 99 (2024) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | February 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 | 000000000012743 |
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.