SR 66 (foothill) over Thompson Creek
GoodLos Angeles County, California · 07-LA-066-2.40-POM · Structure no. 53 0049
- Built
- 1964
- 61 years old, rebuilt 1970
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 18,200
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SR 66 (foothill) over Thompson Creek is a concrete slab carrying SR 66 (foothill) over Thompson Creek in Los Angeles County, California. It was built in 1964 and reconstructed in 1970, so it is 61 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 18,200 vehicles a day, roughly 3% of them trucks, projected to reach 31,674 by 2046. The structure is 32 ft (9.8 m) long and 100 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 66 (foothill) over Thompson Creek built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1970.
What condition is SR 66 (foothill) over Thompson Creek 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 2024.
How much traffic does SR 66 (foothill) over Thompson Creek carry?
About 18,200 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is SR 66 (foothill) over Thompson Creek?
The structure is 32 ft (9.8 m) long with a longest span of 29 ft (8.8 m) and a deck 100 ft wide.
Who owns SR 66 (foothill) over Thompson Creek?
It is owned by the State Highway Agency.