I 495 SB over Water Merrimack River
Poor Condition62 years old66,888 vehicles/day
Location
| State | Massachusetts |
| County | Essex |
| Location | At Methuen Town Line |
| Carries | I 495 SB |
| Crosses | Water Merrimack River |
| Coordinates | 42.75495, -71.12729 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 938.3 ft (286 m) |
| Max Span | 192.9 ft (58.8 m) |
| Deck Width | 52.2 ft (15.9 m) |
| Deck Area | 4547.4 sq m |
| Main Spans | 7 |
| Year Built | 1964 |
Traffic
| Avg Daily Traffic | 66,888 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | H120402X1DOTNBI |