Interstate 84 WB over Alpine Drive
FairFairfield County, Connecticut · .5 MI So of Southbury Tl · Structure no. 04254
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 99 ft
- 1 main span
- Daily traffic
- 36,800
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 84 WB over Alpine Drive is a prestressed concrete stringer/multi-beam or girder carrying Interstate 84 WB over Alpine Drive in Fairfield County, Connecticut. It was built in 1978, so it is 47 years old, younger 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 5 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 36,800 vehicles a day, roughly 9% of them trucks, projected to reach 54,681 by 2042. The structure is 99 ft (30.2 m) long and 68 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 84 WB over Alpine Drive built?
It was built in 1978, making it 47 years old in 2025.
What condition is Interstate 84 WB over Alpine Drive 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 May 2024.
How much traffic does Interstate 84 WB over Alpine Drive carry?
About 36,800 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is Interstate 84 WB over Alpine Drive?
The structure is 99 ft (30.2 m) long with a longest span of 94 ft (28.7 m) and a deck 68 ft wide.
Who owns Interstate 84 WB over Alpine Drive?
It is owned by the State Highway Agency.