Route 4 over Guinea Brook
FairLitchfield County, Connecticut · .5 MI West of JCT RTE 7 · Structure no. 00422
- Built
- 1934
- 91 years old
- Condition
- Fair
- inspected August 2024
- Type
- Arch - Deck
- Concrete
- Length
- 27 ft
- 1 main span
- Daily traffic
- 2,300
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Route 4 over Guinea Brook is a concrete arch - deck carrying Route 4 over Guinea Brook in Litchfield County, Connecticut. It was built in 1934, so it is 91 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 2,300 vehicles a day, roughly 4% of them trucks, projected to reach 3,418 by 2041. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 19.9 mi (32 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 |
|---|---|---|
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 4 over Guinea Brook built?
It was built in 1934, making it 91 years old in 2025.
What condition is Route 4 over Guinea Brook 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 August 2024.
How much traffic does Route 4 over Guinea Brook carry?
About 2,300 vehicles per day (2021 count), of which roughly 4% are trucks.
How long is Route 4 over Guinea Brook?
The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m).
Who owns Route 4 over Guinea Brook?
It is owned by the State Highway Agency.