NH175A over Pemigewasset River
GoodGrafton County, New Hampshire · 0.1 MI E JCT US 3 · Structure no. 012600460013900
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 365 ft
- 3 main spans
- Daily traffic
- 7,661
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NH175A over Pemigewasset River is a steel continuous stringer/multi-beam or girder carrying NH175A over Pemigewasset River in Grafton County, New Hampshire. It was built in 2006, so it is 19 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 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 7,661 vehicles a day, roughly 5% of them trucks, projected to reach 11,338 by 2043. The structure is 365 ft (111.4 m) long and 65 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NH175A over Pemigewasset River built?
It was built in 2006, making it 19 years old in 2025.
What condition is NH175A over Pemigewasset River 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 2024.
How much traffic does NH175A over Pemigewasset River carry?
About 7,661 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is NH175A over Pemigewasset River?
The structure is 365 ft (111.4 m) long with a longest span of 130 ft (39.6 m) and a deck 65 ft wide.
Who owns NH175A over Pemigewasset River?
It is owned by the State Highway Agency.