I 93 SB Bt 57-61 over Rr Mbta & Bmrr
Fair Condition56 years old85,975 vehicles/day
Location
| State | Massachusetts |
| County | Suffolk |
| Location | .5 Mi N Of Jct 193&us1 |
| Carries | I 93 SB Bt 57-61 |
| Crosses | Rr Mbta & Bmrr |
| Coordinates | 42.37879, -71.07608 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 335.0 ft (102.1 m) |
| Max Span | 83.0 ft (25.3 m) |
| Deck Width | 89.6 ft (27.3 m) |
| Deck Area | 2787.3 sq m |
| Main Spans | 4 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 85,975 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | B162813BUDOTNBI |