Interstate 5 SB over Castaic Creek
GoodLos Angeles County, California · 07-LA-005-R56.26 · Structure no. 53 0009L
- Built
- 1968
- 57 years old, rebuilt 2010
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 249 ft
- 3 main spans
- Daily traffic
- 54,420
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 SB over Castaic Creek is a concrete continuous box beam or girders - multiple carrying Interstate 5 SB over Castaic Creek in Los Angeles County, California. It was built in 1968 and reconstructed in 2010, so it is 57 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 54,420 vehicles a day, roughly 17% of them trucks, projected to reach 73,584 by 2041. The structure is 249 ft (76 m) long and 80 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 SB over Castaic Creek built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2010.
What condition is Interstate 5 SB over Castaic 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 April 2023.
How much traffic does Interstate 5 SB over Castaic Creek carry?
About 54,420 vehicles per day (2018 count), of which roughly 17% are trucks.
How long is Interstate 5 SB over Castaic Creek?
The structure is 249 ft (76 m) long with a longest span of 106 ft (32.2 m) and a deck 80 ft wide.
Who owns Interstate 5 SB over Castaic Creek?
It is owned by the State Highway Agency.