Structure F080177W3DOTNBI · Norfolk County, MA
Carries HWY W Central ST over Water Mine Brook, @ 860 W Central ST.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work23 ft end to end, longest span 10 ft. 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 | Massachusetts |
| County | Norfolk |
| Location | @ 860 W Central ST |
| Carries | HWY W Central ST |
| Crosses | Water Mine Brook |
| Coordinates | 42.09071, -71.43292 |
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 22.6 ft (6.9 m) |
| Max Span | 9.5 ft (2.9 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 62.8 sq m |
| Main Spans | 2 |
| Year Built | 1850 (reconstructed 1928) |
| Avg Daily Traffic | 5,200 (2025) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | January 2025 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 6 — Scour calculated, stable |
| Structure Number | F080177W3DOTNBI |
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.