NH142 over Ammonoosuc River
PoorGrafton County, New Hampshire · 2.2 MI from Whitefield Tl · Structure no. 002400990015200
- Built
- 1927
- 98 years old, rebuilt 1998
- Condition
- Poor
- inspected November 2024
- Type
- Truss - Thru
- Steel
- Length
- 124 ft
- 1 main span
- Daily traffic
- 1,167
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NH142 over Ammonoosuc River is a steel truss - thru carrying NH142 over Ammonoosuc River in Grafton County, New Hampshire. It was built in 1927 and reconstructed in 1998, so it is 98 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,167 vehicles a day, roughly 10% of them trucks, projected to reach 1,727 by 2043. The structure is 124 ft (37.8 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 NH142 over Ammonoosuc River built?
It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1998.
What condition is NH142 over Ammonoosuc River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.
How much traffic does NH142 over Ammonoosuc River carry?
About 1,167 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is NH142 over Ammonoosuc River?
The structure is 124 ft (37.8 m) long with a longest span of 117 ft (35.7 m) and a deck 24 ft wide.
Who owns NH142 over Ammonoosuc River?
It is owned by the State Highway Agency.