Route 15 over Mill Brook
FairPosted for loadNew Haven County, Connecticut · 1.0 MI N of Route 10 · Structure no. 02153
- Built
- 1943
- 82 years old
- Condition
- Fair
- inspected September 2024
- Type
- Culvert
- Concrete
- Length
- 31 ft
- 2 main spans
- Daily traffic
- 72,600
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Route 15 over Mill Brook is a concrete culvert carrying Route 15 over Mill Brook in New Haven County, Connecticut. It was built in 1943, so it is 82 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. Its operating status is: posted for other load-capacity restriction.
It carries about 72,600 vehicles a day, roughly 1% of them trucks, projected to reach 107,876 by 2039. The structure is 31 ft (9.4 m) long.
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Route 15 over Mill Brook built?
It was built in 1943, making it 82 years old in 2025.
What condition is Route 15 over Mill 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 September 2024.
How much traffic does Route 15 over Mill Brook carry?
About 72,600 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Route 15 over Mill Brook?
The structure is 31 ft (9.4 m) long with a longest span of 13 ft (4 m).
Who owns Route 15 over Mill Brook?
It is owned by the State Highway Agency.