T-506 (8th Street) over Zerbe Run
Poor Condition122 years old400 vehicles/day
Location
| State | Pennsylvania |
| County | Northumberland |
| Location | Trevorton |
| Carries | T-506 (8th Street) |
| Crosses | Zerbe Run |
| Coordinates | 40.78234, -76.67815 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 26.9 ft (8.2 m) |
| Max Span | 25.9 ft (7.9 m) |
| Deck Width | 19.0 ft (5.8 m) |
| Deck Area | 47.6 sq m |
| Main Spans | 1 |
| Year Built | 1904 (reconstructed 1997) |
Traffic
| Avg Daily Traffic | 400 (2017) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000029390 |