US Route 1 over Mianus River
FairFairfield County, Connecticut · 0.2 MI North of Route 95 · Structure no. 00314
- Built
- 1960
- 65 years old, rebuilt 1993
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 194 ft
- 2 main spans
- Daily traffic
- 20,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US Route 1 over Mianus River is a steel stringer/multi-beam or girder carrying US Route 1 over Mianus River in Fairfield County, Connecticut. It was built in 1960 and reconstructed in 1993, so it is 65 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 20,100 vehicles a day, roughly 6% of them trucks, projected to reach 29,867 by 2043. The structure is 194 ft (59.1 m) long and 69 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Route 1 over Mianus River built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1993.
What condition is US Route 1 over Mianus River 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 November 2024.
How much traffic does US Route 1 over Mianus River carry?
About 20,100 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US Route 1 over Mianus River?
The structure is 194 ft (59.1 m) long with a longest span of 95 ft (29 m) and a deck 69 ft wide.
Who owns US Route 1 over Mianus River?
It is owned by the State Highway Agency.