Structure 21869 · Lancaster County, PA
Carries T481 Black Rock RD over W Br Octoraro Creek, 500 Ft NW Of SR 472.
Set by its lowest-rated component: Deck and Superstructure at 3 of 9.
How ratings work116 ft end to end, longest span 58 ft. Lengths and the car on the deck are drawn to the same scale. 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 bridge of this kind.
| State | Pennsylvania |
| County | Lancaster |
| Location | 500 Ft NW Of SR 472 |
| Carries | T481 Black Rock RD |
| Crosses | W Br Octoraro Creek |
| Coordinates | 39.86674, -76.11156 |
| Material | Concrete |
| Design | Other |
| Total Length | 116.1 ft (35.4 m) |
| Max Span | 58.1 ft (17.7 m) |
| Deck Width | 25.6 ft (7.8 m) |
| Deck Area | 276.1 sq m |
| Main Spans | 2 |
| Year Built | 1921 (reconstructed 1974) |
| Avg Daily Traffic | 50 (2011) |
| Lanes On Bridge | 2 |
| Last Inspection | July 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000000021869 |
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.