I-89 NB over Stoney Brook Road
GoodSullivan County, New Hampshire · 0.1 MI from Sunapee Tl · Structure no. 023900690004000
- Built
- 1968
- 57 years old, rebuilt 2001
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 9,480
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-89 NB over Stoney Brook Road is a prestressed concrete stringer/multi-beam or girder carrying I-89 NB over Stoney Brook Road in Sullivan County, New Hampshire. It was built in 1968 and reconstructed in 2001, so it is 57 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 9,480 vehicles a day, roughly 9% of them trucks, projected to reach 14,030 by 2043. The structure is 65 ft (19.8 m) long and 48 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-89 NB over Stoney Brook Road built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2001.
What condition is I-89 NB over Stoney Brook Road 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 NB over Stoney Brook Road carry?
About 9,480 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is I-89 NB over Stoney Brook Road?
The structure is 65 ft (19.8 m) long with a longest span of 60 ft (18.3 m) and a deck 48 ft wide.
Who owns I-89 NB over Stoney Brook Road?
It is owned by the State Highway Agency.