Structure 57511 · Montgomery County, PA
Carries Forest Hill Drive over Willow Run, 300ft W Of Willow Run RD.
Set by its lowest-rated component: Deck and Superstructure at 5 of 9.
How ratings work25 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 box-beam bridge.
| State | Pennsylvania |
| County | Montgomery |
| Location | 300ft W Of Willow Run RD |
| Carries | Forest Hill Drive |
| Crosses | Willow Run |
| Coordinates | 40.18072, -75.23975 |
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 79.0 sq m |
| Main Spans | 1 |
| Year Built | 1985 |
| Avg Daily Traffic | 100 (2020) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
| Last Inspection | April 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 4 — Foundations need monitoring |
| Structure Number | 000000000057511 |
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.