Route 15 over Mill River
GoodPosted for loadNew Haven County, Connecticut · 0.1 MI N of SR 717 · Structure no. 00785
- Built
- 1943
- 82 years old, rebuilt 1989
- Condition
- Good
- inspected September 2021
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 72,300
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Route 15 over Mill River is a prestressed concrete box beam or girders - multiple carrying Route 15 over Mill River in New Haven County, Connecticut. It was built in 1943 and reconstructed in 1989, 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 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. Its operating status is: posted for other load-capacity restriction.
It carries about 72,300 vehicles a day, roughly 1% of them trucks, projected to reach 107,431 by 2039. The structure is 78 ft (23.8 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Route 15 over Mill River built?
It was built in 1943, making it 82 years old in 2025. It was reconstructed in 1989.
What condition is Route 15 over Mill River 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 September 2021.
How much traffic does Route 15 over Mill River carry?
About 72,300 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Route 15 over Mill River?
The structure is 78 ft (23.8 m) long with a longest span of 72 ft (21.9 m) and a deck 84 ft wide.
Who owns Route 15 over Mill River?
It is owned by the State Highway Agency.