T-660 Old Indiana over Blacklick Creek
Good Condition25 years old500 vehicles/day
Location
| State | Pennsylvania |
| County | Indiana |
| Location | Btw Sr2017 & T668 |
| Carries | T-660 Old Indiana |
| Crosses | Blacklick Creek |
| Coordinates | 40.47699, -79.18681 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 142.1 ft (43.3 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 37.4 ft (11.4 m) |
| Deck Area | 493.6 sq m |
| Main Spans | 2 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 500 (2021) |
| Truck Traffic | 10% |
| 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 | 000000000042428 |