Structure 29296 · Northumberland County, PA
Carries SR 4018 over Indian Springs, 1.5 Mi South Of Sunbury.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.
| State | Pennsylvania |
| County | Northumberland |
| Location | 1.5 Mi South Of Sunbury |
| Carries | SR 4018 |
| Crosses | Indian Springs |
| Coordinates | 40.83095, -76.79867 |
| Material | Concrete |
| Design | Slab |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 63.5 sq m |
| Main Spans | 1 |
| Year Built | 1911 (reconstructed 1992) |
| Avg Daily Traffic | 3,150 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 3 — Scour critical |
| Structure Number | 000000000029296 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.