I-89 Nh 10 SB over Smith Pond Road
FairGrafton County, New Hampshire · 2.2 MI from Grantham T.L. · Structure no. 007700880008900
- Built
- 1959
- 66 years old, rebuilt 1973
- Condition
- Fair
- inspected May 2023
- Type
- Frame
- Concrete
- Length
- 69 ft
- 1 main span
- Daily traffic
- 12,130
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-89 Nh 10 SB over Smith Pond Road is a concrete frame carrying I-89 Nh 10 SB over Smith Pond Road in Grafton County, New Hampshire. It was built in 1959 and reconstructed in 1973, so it is 66 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 6 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 12,130 vehicles a day, roughly 9% of them trucks, projected to reach 17,952 by 2043. The structure is 69 ft (20.9 m) long and 45 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-89 Nh 10 SB over Smith Pond Road built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1973.
What condition is I-89 Nh 10 SB over Smith Pond Road 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 I-89 Nh 10 SB over Smith Pond Road carry?
About 12,130 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is I-89 Nh 10 SB over Smith Pond Road?
The structure is 69 ft (20.9 m) long with a longest span of 60 ft (18.3 m) and a deck 45 ft wide.
Who owns I-89 Nh 10 SB over Smith Pond Road?
It is owned by the State Highway Agency.