County Road over I-89 SB
GoodMerrimack County, New Hampshire · 2.2 MI from Sutton Tl · Structure no. 018800890007400
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected April 2023
- Type
- Frame
- Concrete
- Length
- 74 ft
- 1 main span
- Daily traffic
- 96
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
County Road over I-89 SB is a concrete frame carrying County Road over I-89 SB in Merrimack County, New Hampshire. It was built in 1967, so it is 58 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 74 ft (22.6 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road over I-89 SB built?
It was built in 1967, making it 58 years old in 2025.
What condition is County Road over I-89 SB 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 County Road over I-89 SB carry?
About 96 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is County Road over I-89 SB?
The structure is 74 ft (22.6 m) long with a longest span of 66 ft (20.1 m) and a deck 39 ft wide.
Who owns County Road over I-89 SB?
It is owned by the State Highway Agency.