Tunnel Road over Kirby Brook
GoodLitchfield County, Connecticut · South of Springhill Road · Structure no. 05162
- Built
- 1956
- 69 years old
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 31
- 2019 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Tunnel Road over Kirby Brook is a concrete continuous culvert carrying Tunnel Road over Kirby Brook in Litchfield County, Connecticut. It was built in 1956, so it is 69 years old, older than the Connecticut average of 56.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 31 vehicles a day, roughly 7% of them trucks, projected to reach 46 by 2039. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tunnel Road over Kirby Brook built?
It was built in 1956, making it 69 years old in 2025.
What condition is Tunnel Road over Kirby Brook in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.
How much traffic does Tunnel Road over Kirby Brook carry?
About 31 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is Tunnel Road over Kirby Brook?
The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m) and a deck 22 ft wide.
Who owns Tunnel Road over Kirby Brook?
It is owned by the Town or Township Highway Agency.