Nh111 WB over Merrimack River
Fair Condition56 years old17,275 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | .1 Mi West Of Jct RT 3a |
| Carries | Nh111 WB |
| Crosses | Merrimack River |
| Coordinates | 42.76375, -71.44353 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 602.0 ft (183.5 m) |
| Max Span | 172.9 ft (52.7 m) |
| Deck Width | 37.1 ft (11.3 m) |
| Deck Area | 2073.6 sq m |
| Main Spans | 4 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 17,275 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 013101090006800 |