Isaac Frye Highway over Souhegan River
Fair Condition33 years old851 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | .14 Mi SE Jct 31 |
| Carries | Isaac Frye Highway |
| Crosses | Souhegan River |
| Coordinates | 42.82185, -71.76039 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 125.0 ft (38.1 m) |
| Max Span | 118.1 ft (36 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 384.8 sq m |
| Main Spans | 1 |
| Year Built | 1993 |
Traffic
| Avg Daily Traffic | 851 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 027701100009600 |