US 1 Sb/toll Uppr over US 1 Nb/toll Plaza Lowr
Fair Condition76 years old37,289 vehicles/day
Location
| State | Massachusetts |
| County | Suffolk |
| Location | Toll Pl Upper |
| Carries | US 1 Sb/toll Uppr |
| Crosses | US 1 Nb/toll Plaza Lowr |
| Coordinates | 42.38190, -71.05016 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 1071.9 ft (326.7 m) |
| Max Span | 116.1 ft (35.4 m) |
| Deck Width | 41.7 ft (12.7 m) |
| Deck Area | 4149.1 sq m |
| Main Spans | 12 |
| Year Built | 1950 |
Traffic
| Avg Daily Traffic | 37,289 (2022) |
| Truck Traffic | 9% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 3 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | B160174X2DOTNBI |