Nh 1A over Hampton River
PoorRockingham County, New Hampshire · 0.1 MI from Seabrook Tl · Structure no. 011102350002500
- Built
- 1949
- 76 years old, rebuilt 1984
- Condition
- Poor
- inspected November 2024
- Type
- Movable - Bascule
- Steel
- Length
- 1,199 ft
- 1 main span
- Daily traffic
- 9,402
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nh 1A over Hampton River is a steel movable - bascule carrying Nh 1A over Hampton River in Rockingham County, New Hampshire. It was built in 1949 and reconstructed in 1984, so it is 76 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 9,402 vehicles a day, roughly 7% of them trucks, projected to reach 13,914 by 2043. The structure is 1,199 ft (365.5 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Nh 1A over Hampton River built?
It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1984.
What condition is Nh 1A over Hampton 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 Nh 1A over Hampton River carry?
About 9,402 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Nh 1A over Hampton River?
The structure is 1,199 ft (365.5 m) long with a longest span of 94 ft (28.7 m) and a deck 33 ft wide.
Who owns Nh 1A over Hampton River?
It is owned by the State Highway Agency.