INTERSTATE-91&RT15 over Willow Brook
FairNew Haven County, Connecticut · .12 MI North of E Main ST · Structure no. 01822
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected July 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 136,800
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
INTERSTATE-91&RT15 over Willow Brook is a concrete continuous culvert carrying INTERSTATE-91&RT15 over Willow Brook in New Haven County, Connecticut. It was built in 1964, so it is 61 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 136,800 vehicles a day, roughly 9% of them trucks, projected to reach 203,271 by 2042. The structure is 23 ft (7 m) long. 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was INTERSTATE-91&RT15 over Willow Brook built?
It was built in 1964, making it 61 years old in 2025.
What condition is INTERSTATE-91&RT15 over Willow 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 July 2024.
How much traffic does INTERSTATE-91&RT15 over Willow Brook carry?
About 136,800 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is INTERSTATE-91&RT15 over Willow Brook?
The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).
Who owns INTERSTATE-91&RT15 over Willow Brook?
It is owned by the State Highway Agency.