US 3 over Ammonoosuc River
FairCoos County, New Hampshire · 1.9 MI Bethlehem Tl · Structure no. 003901470005800
- Built
- 1972
- 53 years old, rebuilt 2003
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 165 ft
- 2 main spans
- Daily traffic
- 5,178
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 3 over Ammonoosuc River is a steel stringer/multi-beam or girder carrying US 3 over Ammonoosuc River in Coos County, New Hampshire. It was built in 1972 and reconstructed in 2003, so it is 53 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 5,178 vehicles a day, roughly 10% of them trucks, projected to reach 7,663 by 2043. The structure is 165 ft (50.3 m) long and 58 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 3 over Ammonoosuc River built?
It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2003.
What condition is US 3 over Ammonoosuc River 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 July 2023.
How much traffic does US 3 over Ammonoosuc River carry?
About 5,178 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 3 over Ammonoosuc River?
The structure is 165 ft (50.3 m) long with a longest span of 79 ft (24.2 m) and a deck 58 ft wide.
Who owns US 3 over Ammonoosuc River?
It is owned by the State Highway Agency.