Structure 47436 · Allegheny County, PA
Carries Oak RD over Dawson Run, 1/2 Mile Fr Tr 910.
A culvert 23 ft across. 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, so those are drawn as typical for a culvert.
| State | Pennsylvania |
| County | Allegheny |
| Location | 1/2 Mile Fr Tr 910 |
| Carries | Oak RD |
| Crosses | Dawson Run |
| Coordinates | 40.62472, -79.89833 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Area | 140.7 sq m |
| Main Spans | 1 |
| Year Built | 2012 |
| Avg Daily Traffic | 5,314 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | January 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000000047436 |
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.