Structure M086380 · Middlesex County, NJ
Carries Nj Turnpike(i-95) over Mill Brook, 3 Mi N Of Exit 9/ Rt. 18.
A culvert 23 ft across. 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, so those are drawn as typical for a culvert.
| State | New Jersey |
| County | Middlesex |
| Location | 3 Mi N Of Exit 9/ Rt. 18 |
| Carries | Nj Turnpike(i-95) |
| Crosses | Mill Brook |
| Coordinates | 40.51191, -74.36912 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 285.1 ft (86.9 m) |
| Deck Area | 608.3 sq m |
| Main Spans | 1 |
| Year Built | 1950 (reconstructed 1974) |
| Avg Daily Traffic | 175,376 (2023) |
| Truck Traffic | 14% |
| Lanes On Bridge | 12 |
| Last Inspection | May 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Toll Authority |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | M086380 |
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.