Plains Road over Sugar River
PoorSullivan County, New Hampshire · 0.1 MI JCT RTE 12 · Structure no. 004700910011800
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 194 ft
- 2 main spans
- Daily traffic
- 1,376
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Plains Road over Sugar River is a steel continuous stringer/multi-beam or girder carrying Plains Road over Sugar River in Sullivan County, New Hampshire. It was built in 1974, so it is 51 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 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 1,376 vehicles a day, roughly 3% of them trucks, projected to reach 2,036 by 2043. The structure is 194 ft (59.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Plains Road over Sugar River built?
It was built in 1974, making it 51 years old in 2025.
What condition is Plains Road 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 October 2024.
How much traffic does Plains Road over Sugar River carry?
About 1,376 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Plains Road over Sugar River?
The structure is 194 ft (59.1 m) long with a longest span of 95 ft (29 m) and a deck 36 ft wide.
Who owns Plains Road over Sugar River?
It is owned by the City or Municipal Highway Agency.