I 5 SB over I 5 & Castaic Road
GoodLos Angeles County, California · 07-LA-005-R59.95L · Structure no. 53 1902L
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 486 ft
- 4 main spans
- Daily traffic
- 36,657
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
I 5 SB over I 5 & Castaic Road is a prestressed concrete continuous box beam or girders - multiple carrying I 5 SB over I 5 & Castaic Road in Los Angeles County, California. It was built in 1969, so it is 56 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 36,657 vehicles a day, roughly 29% of them trucks, projected to reach 52,859 by 2041. The structure is 486 ft (148.1 m) long and 68 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 5 SB over I 5 & Castaic Road built?
It was built in 1969, making it 56 years old in 2025.
What condition is I 5 SB over I 5 & Castaic Road 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 I 5 SB over I 5 & Castaic Road carry?
About 36,657 vehicles per day (2018 count), of which roughly 29% are trucks.
How long is I 5 SB over I 5 & Castaic Road?
The structure is 486 ft (148.1 m) long with a longest span of 164 ft (50 m) and a deck 68 ft wide.
Who owns I 5 SB over I 5 & Castaic Road?
It is owned by the State Highway Agency.