Interstate 684 NB over Byram River
PoorFairfield County, Connecticut · Between Exits 2 & 3 · Structure no. 03514
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 59 ft
- 1 main span
- Daily traffic
- 35,050
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 684 NB over Byram River is a prestressed concrete box beam or girders - multiple carrying Interstate 684 NB over Byram River in Fairfield County, Connecticut. It was built in 1968, so it is 57 years old, older than the Connecticut average of 56.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 35,050 vehicles a day, roughly 9% of them trucks, projected to reach 52,081 by 2039. The structure is 59 ft (18 m) long and 57 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 684 NB over Byram River built?
It was built in 1968, making it 57 years old in 2025.
What condition is Interstate 684 NB over Byram River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.
How much traffic does Interstate 684 NB over Byram River carry?
About 35,050 vehicles per day (2019 count), of which roughly 9% are trucks.
How long is Interstate 684 NB over Byram River?
The structure is 59 ft (18 m) long with a longest span of 57 ft (17.5 m) and a deck 57 ft wide.
Who owns Interstate 684 NB over Byram River?
It is owned by the State Highway Agency.