Boston Post Road over Souhegan River
Fair Condition49 years old4,409 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | 1.9 Mi Merrimack Tl |
| Carries | Boston Post Road |
| Crosses | Souhegan River |
| Coordinates | 42.82725, -71.58524 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 87.9 ft (26.8 m) |
| Max Span | 83.0 ft (25.3 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 251.9 sq m |
| Main Spans | 1 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 4,409 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 000701930013000 |