Route 123 over Five Mile River
FairFairfield County, Connecticut · 0.4 MI North of Route 106 · Structure no. 02647
- Built
- 1933
- 92 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 10,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Route 123 over Five Mile River is a concrete slab carrying Route 123 over Five Mile River in Fairfield County, Connecticut. It was built in 1933, 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 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 10,300 vehicles a day, roughly 6% of them trucks, projected to reach 15,305 by 2043. The structure is 23 ft (7 m) long and 55 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 | 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Route 123 over Five Mile River built?
It was built in 1933, making it 92 years old in 2025.
What condition is Route 123 over Five Mile 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 August 2024.
How much traffic does Route 123 over Five Mile River carry?
About 10,300 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is Route 123 over Five Mile River?
The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 55 ft wide.
Who owns Route 123 over Five Mile River?
It is owned by the State Highway Agency.