HWY Main ST over Water Merrimack River
Fair Condition176 years old16,700 vehicles/day
Location
| State | Massachusetts |
| County | Essex |
| Location | At Merrimack River |
| Carries | HWY Main ST |
| Crosses | Water Merrimack River |
| Coordinates | 42.83537, -70.90743 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Movable - Swing |
| Total Length | 427.2 ft (130.2 m) |
| Max Span | 162.1 ft (49.4 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 1380.1 sq m |
| Main Spans | 2 |
| Year Built | 1850 (reconstructed 2012) |
Traffic
| Avg Daily Traffic | 16,700 (2021) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | A070102Y9DOTNBI |