State Route 166 over Aliso Creek
FairSanta Barbara County, California · 05-SB-166-R25.49 · Structure no. 51 0233
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected December 2024
- Type
- Slab
- Concrete Continuous
- Length
- 86 ft
- 3 main spans
- Daily traffic
- 2,700
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 166 over Aliso Creek is a concrete continuous slab carrying State Route 166 over Aliso Creek in Santa Barbara County, California. It was built in 1969, so it is 56 years old, older than the California average of 54.8 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 2,700 vehicles a day, projected to reach 4,665 by 2042. The structure is 86 ft (26.2 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 166 over Aliso Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is State Route 166 over Aliso Creek 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 December 2024.
How much traffic does State Route 166 over Aliso Creek carry?
About 2,700 vehicles per day (2009 count).
How long is State Route 166 over Aliso Creek?
The structure is 86 ft (26.2 m) long with a longest span of 29 ft (8.8 m) and a deck 34 ft wide.
Who owns State Route 166 over Aliso Creek?
It is owned by the State Highway Agency.