Nh 12A over Sugar River
PoorSullivan County, New Hampshire · .1 Mi. from Jct. Rte. 103 · Structure no. 004700720012700
- Built
- 1967
- 58 years old, rebuilt 1991
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 281 ft
- 3 main spans
- Daily traffic
- 1,067
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nh 12A over Sugar River is a steel continuous stringer/multi-beam or girder carrying Nh 12A over Sugar River in Sullivan County, New Hampshire. It was built in 1967 and reconstructed in 1991, so it is 58 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 3 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 1,067 vehicles a day, roughly 7% of them trucks, projected to reach 1,579 by 2043. The structure is 281 ft (85.6 m) long and 33 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 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Nh 12A over Sugar River built?
It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1991.
What condition is Nh 12A over Sugar 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 12A over Sugar River carry?
About 1,067 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Nh 12A over Sugar River?
The structure is 281 ft (85.6 m) long with a longest span of 112 ft (34.1 m) and a deck 33 ft wide.
Who owns Nh 12A over Sugar River?
It is owned by the State Highway Agency.