Structure B100130X0DOTNBI · Franklin County, MA
Carries I 91 over Water Falls Brook, Mm 52.4 On I-91.
A culvert 20 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 | Massachusetts |
| County | Franklin |
| Location | Mm 52.4 On I-91 |
| Carries | I 91 |
| Crosses | Water Falls Brook |
| Coordinates | 42.69964, -72.55325 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 20.0 ft (6.1 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Area | 70.8 sq m |
| Main Spans | 1 |
| Year Built | 1958 |
| Avg Daily Traffic | 15,215 (2018) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | B100130X0DOTNBI |
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.