Structure 123B171 · Middlesex County, NJ
Carries Easton Ave(rt 527) over Mile Run Brook, 1.02 Mi N.hamilton CR 514.
Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.
How ratings work22 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 deck arch.
| State | New Jersey |
| County | Middlesex |
| Location | 1.02 Mi N.hamilton CR 514 |
| Carries | Easton Ave(rt 527) |
| Crosses | Mile Run Brook |
| Coordinates | 40.50503, -74.46711 |
| Material | Masonry |
| Design | Arch - Deck |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 60.7 ft (18.5 m) |
| Deck Area | 124.0 sq m |
| Main Spans | 1 |
| Year Built | 1878 (reconstructed 2003) |
| Avg Daily Traffic | 20,708 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | March 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 123B171 |
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.