NH175 over Winter Brook
FairGrafton County, New Hampshire · 6.2 MI N JCT US 3 · Structure no. 003501540014400
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete
- Length
- 26 ft
- 1 main span
- Daily traffic
- 2,020
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NH175 over Winter Brook is a concrete slab carrying NH175 over Winter Brook in Grafton County, New Hampshire. It was built in 1974, so it is 51 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 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 2,020 vehicles a day, roughly 10% of them trucks, projected to reach 2,989 by 2043. The structure is 26 ft (7.9 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NH175 over Winter Brook built?
It was built in 1974, making it 51 years old in 2025.
What condition is NH175 over Winter Brook 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 2024.
How much traffic does NH175 over Winter Brook carry?
About 2,020 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is NH175 over Winter Brook?
The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.
Who owns NH175 over Winter Brook?
It is owned by the State Highway Agency.