I 495 & Access Rps over Water Merrimack River
Poor Condition64 years old79,000 vehicles/day
Location
| State | Massachusetts |
| County | Essex |
| Location | At Merrimac River |
| Carries | I 495 & Access Rps |
| Crosses | Water Merrimack River |
| Coordinates | 42.70646, -71.13883 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 966.9 ft (294.7 m) |
| Max Span | 124.0 ft (37.8 m) |
| Deck Width | 85.0 ft (25.9 m) |
| Deck Area | 7632.7 sq m |
| Main Spans | 8 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 79,000 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | L040352X6DOTNBI |