Columbia Bridge RD over Connecticut River
FairPosted for loadCoos County, New Hampshire · Vermont State Line · Structure no. 005100770014000
- Built
- 1912
- 113 years old, rebuilt 1981
- Condition
- Fair
- inspected October 2024
- Type
- Truss - Thru
- Wood or Timber
- Length
- 146 ft
- 1 main span
- Daily traffic
- 180
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Columbia Bridge RD over Connecticut River is a wood or timber truss - thru carrying Columbia Bridge RD over Connecticut River in Coos County, New Hampshire. It was built in 1912 and reconstructed in 1981, so it is 113 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 180 vehicles a day, projected to reach 266 by 2043. The structure is 146 ft (44.5 m) long and 16 ft wide. If it were closed, the detour would be 18 mi (29 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Columbia Bridge RD over Connecticut River built?
It was built in 1912, making it 113 years old in 2025. It was reconstructed in 1981.
What condition is Columbia Bridge RD over Connecticut 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 October 2024.
How much traffic does Columbia Bridge RD over Connecticut River carry?
About 180 vehicles per day (2023 count).
How long is Columbia Bridge RD over Connecticut River?
The structure is 146 ft (44.5 m) long with a longest span of 133 ft (40.5 m) and a deck 16 ft wide.
Who owns Columbia Bridge RD over Connecticut River?
It is owned by the City or Municipal Highway Agency.