Nh 11B over Gunstock River
FairBelknap County, New Hampshire · 0.3 MI N JCT Nh 11-A · Structure no. 009101260010100
- Built
- 1931
- 94 years old, rebuilt 1979
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 26 ft
- 1 main span
- Daily traffic
- 2,690
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nh 11B over Gunstock River is a steel stringer/multi-beam or girder carrying Nh 11B over Gunstock River in Belknap County, New Hampshire. It was built in 1931 and reconstructed in 1979, so it is 94 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,690 vehicles a day, roughly 4% of them trucks, projected to reach 3,981 by 2043. The structure is 26 ft (7.9 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 11B over Gunstock River built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1979.
What condition is Nh 11B over Gunstock River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.
How much traffic does Nh 11B over Gunstock River carry?
About 2,690 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Nh 11B over Gunstock River?
The structure is 26 ft (7.9 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.
Who owns Nh 11B over Gunstock River?
It is owned by the State Highway Agency.