Route 12 over Quinebaug River
FairNew London County, Connecticut · .1 MI North of Route 138 · Structure no. 05643
- Built
- 1930
- 95 years old, rebuilt 1987
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 380 ft
- 5 main spans
- Daily traffic
- 8,200
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Route 12 over Quinebaug River is a steel continuous stringer/multi-beam or girder carrying Route 12 over Quinebaug River in New London County, Connecticut. It was built in 1930 and reconstructed in 1987, so it is 95 years old, older than the Connecticut average of 56.7 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 8,200 vehicles a day, roughly 5% of them trucks, projected to reach 12,184 by 2040. The structure is 380 ft (115.8 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 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 Route 12 over Quinebaug River built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1987.
What condition is Route 12 over Quinebaug 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 2023.
How much traffic does Route 12 over Quinebaug River carry?
About 8,200 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Route 12 over Quinebaug River?
The structure is 380 ft (115.8 m) long with a longest span of 75 ft (22.9 m) and a deck 39 ft wide.
Who owns Route 12 over Quinebaug River?
It is owned by the State Highway Agency.