State Route 170 over Laurel Canyon Blvd
FairLos Angeles County, California · 07-LA-170-R16.77-LA · Structure no. 53 1686
- Built
- 1966
- 59 years old, rebuilt 2022
- Condition
- Fair
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 270 ft
- 4 main spans
- Daily traffic
- 212,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 170 over Laurel Canyon Blvd is a concrete continuous box beam or girders - multiple carrying State Route 170 over Laurel Canyon Blvd in Los Angeles County, California. It was built in 1966 and reconstructed in 2022, so it is 59 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 212,000 vehicles a day, roughly 5% of them trucks, projected to reach 235,320 by 2043. The structure is 270 ft (82.4 m) long and 152 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 170 over Laurel Canyon Blvd built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2022.
What condition is State Route 170 over Laurel Canyon Blvd 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 March 2024.
How much traffic does State Route 170 over Laurel Canyon Blvd carry?
About 212,000 vehicles per day (2017 count), of which roughly 5% are trucks.
How long is State Route 170 over Laurel Canyon Blvd?
The structure is 270 ft (82.4 m) long with a longest span of 85 ft (25.9 m) and a deck 152 ft wide.
Who owns State Route 170 over Laurel Canyon Blvd?
It is owned by the State Highway Agency.