Nh 11B over Gunstock River
PoorBelknap County, New Hampshire · 0.6 MI N JCT Nh 11-A · Structure no. 009101210010200
- Built
- 1941
- 84 years old
- Condition
- Poor
- inspected November 2024
- Type
- Slab
- Concrete
- Length
- 25 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 concrete slab carrying Nh 11B over Gunstock River in Belknap County, New Hampshire. It was built in 1941, so it is 84 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 2,690 vehicles a day, roughly 4% of them trucks, projected to reach 3,981 by 2043. The structure is 25 ft (7.6 m) long and 28 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 1941, making it 84 years old in 2025.
What condition is Nh 11B over Gunstock River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.
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 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 28 ft wide.
Who owns Nh 11B over Gunstock River?
It is owned by the State Highway Agency.