T-439 Whipporwill over Mulligan Run
Fair Condition110 years old50 vehicles/day
Location
| State | Pennsylvania |
| County | Butler |
| Location | 1.1 Miles West Of SR 422 |
| Carries | T-439 Whipporwill |
| Crosses | Mulligan Run |
| Coordinates | 40.88999, -79.99947 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Concrete |
| Design | Other |
| Total Length | 30.8 ft (9.4 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 17.4 ft (5.3 m) |
| Deck Area | 49.8 sq m |
| Main Spans | 1 |
| Year Built | 1916 |
Traffic
| Avg Daily Traffic | 50 (2017) |
| Truck Traffic | 9% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008234 |