US 20 Wb/bstn Pst over I 495
Fair Condition64 years old10,227 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | 1.8 Mi. E. Of Nthboro Tl. |
| Carries | US 20 Wb/bstn Pst |
| Crosses | I 495 |
| Coordinates | 42.34123, -71.57527 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 285.1 ft (86.9 m) |
| Max Span | 76.1 ft (23.2 m) |
| Deck Width | 49.2 ft (15 m) |
| Deck Area | 1303.5 sq m |
| Main Spans | 5 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 10,227 (2023) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 8 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | M060091L5DOTNBI |