Thornton Road over Pennichuck Brook
Good Condition25 years old1,231 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | Nashua/merr Tl |
| Carries | Thornton Road |
| Crosses | Pennichuck Brook |
| Coordinates | 42.80044, -71.51587 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 46.6 ft (14.2 m) |
| Max Span | 41.7 ft (12.7 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 149.1 sq m |
| Main Spans | 1 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 1,231 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016800890003800 |