State Route 27 over Santa Susana Creek
GoodLos Angeles County, California · 07-LA-027-17.01-LA · Structure no. 53 0146
- Built
- 1964
- 61 years old, rebuilt 1966
- Condition
- Good
- inspected January 2024
- Type
- Slab
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 35,250
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 27 over Santa Susana Creek is a concrete slab carrying State Route 27 over Santa Susana Creek in Los Angeles County, California. It was built in 1964 and reconstructed in 1966, 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 35,250 vehicles a day, roughly 5% of them trucks, projected to reach 46,080 by 2046. The structure is 30 ft (9.1 m) long and 104 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 State Route 27 over Santa Susana Creek built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1966.
What condition is State Route 27 over Santa Susana 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 January 2024.
How much traffic does State Route 27 over Santa Susana Creek carry?
About 35,250 vehicles per day (2014 count), of which roughly 5% are trucks.
How long is State Route 27 over Santa Susana Creek?
The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 104 ft wide.
Who owns State Route 27 over Santa Susana Creek?
It is owned by the State Highway Agency.