I-89 Nh 10 SB over Hardy Hill Road
GoodGrafton County, New Hampshire · 2.5 MI from Enfield T.L. · Structure no. 014401550011700
- Built
- 1966
- 59 years old, rebuilt 2017
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete Continuous
- Length
- 48 ft
- 1 main span
- Daily traffic
- 16,677
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-89 Nh 10 SB over Hardy Hill Road is a prestressed concrete continuous tee beam carrying I-89 Nh 10 SB over Hardy Hill Road in Grafton County, New Hampshire. It was built in 1966 and reconstructed in 2017, so it is 59 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 16,677 vehicles a day, roughly 9% of them trucks, projected to reach 24,681 by 2043. The structure is 48 ft (14.5 m) long and 54 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-89 Nh 10 SB over Hardy Hill Road built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2017.
What condition is I-89 Nh 10 SB over Hardy Hill 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 June 2023.
How much traffic does I-89 Nh 10 SB over Hardy Hill Road carry?
About 16,677 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is I-89 Nh 10 SB over Hardy Hill Road?
The structure is 48 ft (14.5 m) long with a longest span of 41 ft (12.6 m) and a deck 54 ft wide.
Who owns I-89 Nh 10 SB over Hardy Hill Road?
It is owned by the State Highway Agency.