State Route 1 over Arroyo Sequit
GoodLos Angeles County, California · 07-LA-001-62.26 · Structure no. 53 0026
- Built
- 1927
- 98 years old, rebuilt 1954
- Condition
- Good
- inspected August 2023
- Type
- Tee Beam
- Concrete
- Length
- 95 ft
- 3 main spans
- Daily traffic
- 12,700
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Arroyo Sequit is a concrete tee beam carrying State Route 1 over Arroyo Sequit in Los Angeles County, California. It was built in 1927 and reconstructed in 1954, so it is 98 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 12,700 vehicles a day, roughly 3% of them trucks, projected to reach 15,900 by 2040. The structure is 95 ft (29 m) long and 79 ft wide. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Arroyo Sequit built?
It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1954.
What condition is State Route 1 over Arroyo Sequit 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 August 2023.
How much traffic does State Route 1 over Arroyo Sequit carry?
About 12,700 vehicles per day (2017 count), of which roughly 3% are trucks.
How long is State Route 1 over Arroyo Sequit?
The structure is 95 ft (29 m) long with a longest span of 31 ft (9.4 m) and a deck 79 ft wide.
Who owns State Route 1 over Arroyo Sequit?
It is owned by the State Highway Agency.