SR 642 over W.b. Susquehanna River
Good Condition39 years old10,757 vehicles/day
Location
| State | Pennsylvania |
| County | Northumberland |
| Location | W.milton/island River Br. |
| Carries | SR 642 |
| Crosses | W.b. Susquehanna River |
| Coordinates | 41.01830, -76.86441 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 619.1 ft (188.7 m) |
| Max Span | 123.0 ft (37.5 m) |
| Deck Width | 44.0 ft (13.4 m) |
| Deck Area | 2528.6 sq m |
| Main Spans | 5 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 10,757 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000029115 |