US 1 SB over US 1 NB
Poor Condition32 years old34,040 vehicles/day
Location
| State | Massachusetts |
| County | Suffolk |
| Location | S Appr Tobin |
| Carries | US 1 SB |
| Crosses | US 1 NB |
| Coordinates | 42.37418, -71.05816 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 710.0 ft (216.4 m) |
| Max Span | 80.1 ft (24.4 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 2856.5 sq m |
| Main Spans | 9 |
| Year Built | 1994 |
Traffic
| Avg Daily Traffic | 34,040 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 3 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | B16409927DOTNBI |