Boyle Road over Flat Run
Adams County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Boyle Road over Flat Run in Adams County, Pennsylvania, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1941, making it 84 years old at the 2025 inventory.
- It carries about 200 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 143 of the 254 inventoried bridges in Adams County rated fair (56.3%); 18 (7.1%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated May 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.72639, -77.33489)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 69 ft |
| Location | 4.5 Mi.se of Fairfield |
| NBI structure number | 000000000000450 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Adams County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 15; SR 0015 over Latimore Creek | 1963 | 21,392 | Fair |
| US 15; SR 0015 over Plum Run | 1963 | 20,569 | Fair |
| US 15; SR 0015 over Branch Rock Creek | 1963 | 19,905 | Fair |
| US 15; SR 0015 over Pa 94; SR 0094 | 1957 | 19,905 | Good |
| US 30; York Rd. over US 15; SR 0015 | 1963 | 16,182 | Fair |
| York St (SR 30) over Rock Creek | 2019 | 15,690 | Good |
All bridges nearby: Adams County, PA bridge conditions · every bridge in Adams County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.