INTERSTATE-84 over Great Plain Road
FairFairfield County, Connecticut · Between Exits 6 & 7 · Structure no. 01191
- Built
- 1960
- 65 years old, rebuilt 1988
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 60 ft
- 1 main span
- Daily traffic
- 120,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
INTERSTATE-84 over Great Plain Road is a steel stringer/multi-beam or girder carrying INTERSTATE-84 over Great Plain Road in Fairfield County, Connecticut. It was built in 1960 and reconstructed in 1988, 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 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 120,000 vehicles a day, roughly 9% of them trucks, projected to reach 178,308 by 2041. The structure is 60 ft (18.3 m) long and 128 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was INTERSTATE-84 over Great Plain Road built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1988.
What condition is INTERSTATE-84 over Great Plain Road 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 June 2024.
How much traffic does INTERSTATE-84 over Great Plain Road carry?
About 120,000 vehicles per day (2021 count), of which roughly 9% are trucks.
How long is INTERSTATE-84 over Great Plain Road?
The structure is 60 ft (18.3 m) long with a longest span of 55 ft (16.8 m) and a deck 128 ft wide.
Who owns INTERSTATE-84 over Great Plain Road?
It is owned by the State Highway Agency.