State Route 1 over Bixby Slough
GoodLos Angeles County, California · 07-LA-001-12.01-LA · Structure no. 53 1270
- Built
- 1934
- 91 years old, rebuilt 1975
- Condition
- Good
- inspected July 2023
- Type
- Culvert
- Concrete
- Length
- 101 ft
- 8 main spans
- Daily traffic
- 50,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Bixby Slough is a concrete culvert carrying State Route 1 over Bixby Slough in Los Angeles County, California. It was built in 1934 and reconstructed in 1975, so it is 91 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 50,000 vehicles a day, roughly 5% of them trucks, projected to reach 60,253 by 2043. The structure is 101 ft (30.8 m) long and 98 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Bixby Slough built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1975.
What condition is State Route 1 over Bixby Slough in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.
How much traffic does State Route 1 over Bixby Slough carry?
About 50,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is State Route 1 over Bixby Slough?
The structure is 101 ft (30.8 m) long with a longest span of 14 ft (4.3 m) and a deck 98 ft wide.
Who owns State Route 1 over Bixby Slough?
It is owned by the State Highway Agency.