River RD (sr 66) over Carnahan Run
Good Condition8 years old2,541 vehicles/day
Location
| State | Pennsylvania |
| County | Armstrong |
| Location | Carnahan Run No.1 |
| Carries | River RD (sr 66) |
| Crosses | Carnahan Run |
| Coordinates | 40.61248, -79.58363 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 100.1 ft (30.5 m) |
| Max Span | 96.1 ft (29.3 m) |
| Deck Width | 38.1 ft (11.6 m) |
| Deck Area | 353.8 sq m |
| Main Spans | 1 |
| Year Built | 2018 |
Traffic
| Avg Daily Traffic | 2,541 (2024) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000053452 |