T-428 Grubb RD over S Br Slippery Rock CR
Fair Condition114 years old100 vehicles/day
Location
| State | Pennsylvania |
| County | Butler |
| Location | Btw T540 & Sr4010 |
| Carries | T-428 Grubb RD |
| Crosses | S Br Slippery Rock CR |
| Coordinates | 41.07316, -79.93184 |
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 | 43.0 ft (13.1 m) |
| Max Span | 41.0 ft (12.5 m) |
| Deck Width | 18.4 ft (5.6 m) |
| Deck Area | 73.4 sq m |
| Main Spans | 1 |
| Year Built | 1912 (reconstructed 1994) |
Traffic
| Avg Daily Traffic | 100 (2017) |
| Truck Traffic | 9% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008177 |