Structure R0502139FDOTNBI · Suffolk County, MA
Carries ST 1 A/lee Brbnk over Other Oil Pipe Tunnel, 1 Mi SW Of Jet SR 145&1a.
A culvert 22 ft across with 2 openings. 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 | Suffolk |
| Location | 1 Mi SW Of Jet SR 145&1a |
| Carries | ST 1 A/lee Brbnk |
| Crosses | Other Oil Pipe Tunnel |
| Coordinates | 42.40016, -71.00615 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 101.0 ft (30.8 m) |
| Deck Area | 206.4 sq m |
| Main Spans | 2 |
| Year Built | 1933 |
| Avg Daily Traffic | 119,439 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 4 |
| Last Inspection | June 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | Not applicable |
| Structure Number | R0502139FDOTNBI |
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.