State Route 166 over Cuyama River
FairSanta Barbara County, California · 05-SB-166-R30.37 · Structure no. 51 0218
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 274 ft
- 3 main spans
- Daily traffic
- 2,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 166 over Cuyama River is a prestressed concrete continuous stringer/multi-beam or girder carrying State Route 166 over Cuyama River in Santa Barbara County, California. It was built in 1974, so it is 51 years old, younger 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 6 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 2,500 vehicles a day, projected to reach 4,665 by 2042. The structure is 274 ft (83.5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 Cuyama River built?
It was built in 1974, making it 51 years old in 2025.
What condition is State Route 166 over Cuyama 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 December 2024.
How much traffic does State Route 166 over Cuyama River carry?
About 2,500 vehicles per day (2009 count).
How long is State Route 166 over Cuyama River?
The structure is 274 ft (83.5 m) long with a longest span of 90 ft (27.4 m) and a deck 34 ft wide.
Who owns State Route 166 over Cuyama River?
It is owned by the State Highway Agency.