INTERSTATE-91 over Mill Brook
GoodHartford County, Connecticut · 0.5 MI North of Route 305 · Structure no. 01264
- Built
- 1954
- 71 years old, rebuilt 1988
- Condition
- Good
- inspected December 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 118,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
INTERSTATE-91 over Mill Brook is a concrete continuous culvert carrying INTERSTATE-91 over Mill Brook in Hartford County, Connecticut. It was built in 1954 and reconstructed in 1988, so it is 71 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 118,100 vehicles a day, roughly 9% of them trucks, projected to reach 175,485 by 2043. The structure is 21 ft (6.4 m) long. 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was INTERSTATE-91 over Mill Brook built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1988.
What condition is INTERSTATE-91 over Mill 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 December 2024.
How much traffic does INTERSTATE-91 over Mill Brook carry?
About 118,100 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is INTERSTATE-91 over Mill Brook?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns INTERSTATE-91 over Mill Brook?
It is owned by the State Highway Agency.