T-539 Dematteis over N Br Slippery Rock CR
Fair Condition116 years old100 vehicles/day
Location
| State | Pennsylvania |
| County | Butler |
| Location | 0.63 Mi SW Of SR 4012 |
| Carries | T-539 Dematteis |
| Crosses | N Br Slippery Rock CR |
| Coordinates | 41.10020, -79.93292 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 27.9 ft (8.5 m) |
| Max Span | 25.9 ft (7.9 m) |
| Deck Width | 16.7 ft (5.1 m) |
| Deck Area | 43.4 sq m |
| Main Spans | 1 |
| Year Built | 1910 (reconstructed 1992) |
Traffic
| Avg Daily Traffic | 100 (2017) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008258 |