T-439 Watson RD over N Br Slippery Rock Creek
Poor Condition126 years old50 vehicles/day
Location
| State | Pennsylvania |
| County | Butler |
| Location | 0.1 Mi W Of Black Road |
| Carries | T-439 Watson RD |
| Crosses | N Br Slippery Rock Creek |
| Coordinates | 41.12308, -79.94694 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 4 (Poor) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 38.1 ft (11.6 m) |
| Max Span | 36.1 ft (11 m) |
| Deck Width | 15.7 ft (4.8 m) |
| Deck Area | 55.7 sq m |
| Main Spans | 1 |
| Year Built | 1900 (reconstructed 2009) |
Traffic
| Avg Daily Traffic | 50 (2015) |
| Truck Traffic | 9% |
| Lanes On Bridge | 1 |
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 | 000000000008255 |