Nh 49 over High Brook
GoodGrafton County, New Hampshire · 2.4 Mi. NE Thornton Tl · Structure no. 026600960007100
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected May 2024
- Type
- Slab
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 2,074
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nh 49 over High Brook is a concrete slab carrying Nh 49 over High Brook in Grafton County, New Hampshire. It was built in 1967, so it is 58 years old, older than the New Hampshire average of 56.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,074 vehicles a day, roughly 4% of them trucks, projected to reach 3,069 by 2043. The structure is 23 ft (7 m) long and 34 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nh 49 over High Brook built?
It was built in 1967, making it 58 years old in 2025.
What condition is Nh 49 over High Brook in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.
How much traffic does Nh 49 over High Brook carry?
About 2,074 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Nh 49 over High Brook?
The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.
Who owns Nh 49 over High Brook?
It is owned by the State Highway Agency.