I-89 Nh 10 SB over Stony Brook
GoodSullivan County, New Hampshire · 5.06 MI Springfield Tl · Structure no. 010001100014300
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected April 2023
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 1 main span
- Daily traffic
- 10,987
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-89 Nh 10 SB over Stony Brook is a concrete culvert carrying I-89 Nh 10 SB over Stony Brook in Sullivan County, New Hampshire. It was built in 1972, so it is 53 years old, younger 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 10,987 vehicles a day, roughly 9% of them trucks, projected to reach 16,260 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-89 Nh 10 SB over Stony Brook built?
It was built in 1972, making it 53 years old in 2025.
What condition is I-89 Nh 10 SB over Stony 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 April 2023.
How much traffic does I-89 Nh 10 SB over Stony Brook carry?
About 10,987 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is I-89 Nh 10 SB over Stony Brook?
The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).
Who owns I-89 Nh 10 SB over Stony Brook?
It is owned by the State Highway Agency.