Route 166 over AMTRAK Railroad
FairMiddlesex County, Connecticut · 0.2 MI West of US Route 1 · Structure no. 05702
- Built
- 1933
- 92 years old, rebuilt 1988
- Condition
- Fair
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 10,400
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Route 166 over AMTRAK Railroad is a prestressed concrete box beam or girders - multiple carrying Route 166 over AMTRAK Railroad in Middlesex County, Connecticut. It was built in 1933 and reconstructed in 1988, so it is 92 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 10,400 vehicles a day, roughly 5% of them trucks, projected to reach 15,453 by 2042. The structure is 65 ft (19.9 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Route 166 over AMTRAK Railroad built?
It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1988.
What condition is Route 166 over AMTRAK Railroad 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 February 2024.
How much traffic does Route 166 over AMTRAK Railroad carry?
About 10,400 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is Route 166 over AMTRAK Railroad?
The structure is 65 ft (19.9 m) long with a longest span of 61 ft (18.6 m) and a deck 45 ft wide.
Who owns Route 166 over AMTRAK Railroad?
It is owned by the State Highway Agency.