I 495 SB over HWY Ramps A & B
Fair Condition64 years old64,284 vehicles/day
Location
| State | Massachusetts |
| County | Essex |
| Location | .3 Mi N Merrimac River |
| Carries | I 495 SB |
| Crosses | HWY Ramps A & B |
| Coordinates | 42.71161, -71.13756 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 144.0 ft (43.9 m) |
| Max Span | 84.0 ft (25.6 m) |
| Deck Width | 89.2 ft (27.2 m) |
| Deck Area | 1194.1 sq m |
| Main Spans | 3 |
| Year Built | 1962 (reconstructed 2002) |
Traffic
| Avg Daily Traffic | 64,284 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | L040392X8DOTNBI |