St129 Salem ST over US 1 Newburyport Tnpk
Fair Condition67 years old40,800 vehicles/day
Location
| State | Massachusetts |
| County | Essex |
| Location | .32 Km S St128 |
| Carries | St129 Salem ST |
| Crosses | US 1 Newburyport Tnpk |
| Coordinates | 42.51429, -71.00351 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 73.2 ft (22.3 m) |
| Max Span | 67.9 ft (20.7 m) |
| Deck Width | 159.8 ft (48.7 m) |
| Deck Area | 1086.0 sq m |
| Main Spans | 1 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 40,800 (2024) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
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 | L1901431BDOTNBI |