Route 74 over Knowlton Brook
GoodWindham County, Connecticut · 1.5 Mile West of Route 44 · Structure no. 05819
- Built
- 1939
- 86 years old, rebuilt 1989
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 4,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Route 74 over Knowlton Brook is a concrete slab carrying Route 74 over Knowlton Brook in Windham County, Connecticut. It was built in 1939 and reconstructed in 1989, so it is 86 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 4,500 vehicles a day, roughly 4% of them trucks, projected to reach 6,687 by 2040. The structure is 23 ft (7 m) long and 38 ft wide. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 74 over Knowlton Brook built?
It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1989.
What condition is Route 74 over Knowlton 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 June 2024.
How much traffic does Route 74 over Knowlton Brook carry?
About 4,500 vehicles per day (2020 count), of which roughly 4% are trucks.
How long is Route 74 over Knowlton Brook?
The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 38 ft wide.
Who owns Route 74 over Knowlton Brook?
It is owned by the State Highway Agency.