I 495 NB over St110 Chelmsford ST
Fair Condition66 years old58,760 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | RT 495 At RT 110 |
| Carries | I 495 NB |
| Crosses | St110 Chelmsford ST |
| Coordinates | 42.60517, -71.34460 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 170.3 ft (51.9 m) |
| Max Span | 83.0 ft (25.3 m) |
| Deck Width | 60.0 ft (18.3 m) |
| Deck Area | 949.8 sq m |
| Main Spans | 3 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 58,760 (2024) |
| Truck Traffic | 6% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | C080252J9DOTNBI |