State Route 23 over Arroyo Simi
GoodVentura County, California · 07-VEN-023-T12.04-MRPK · Structure no. 52 0341
- Built
- 1970
- 55 years old, rebuilt 2002
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 125 ft
- 1 main span
- Daily traffic
- 11,300
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 23 over Arroyo Simi is a prestressed concrete box beam or girders - multiple carrying State Route 23 over Arroyo Simi in Ventura County, California. It was built in 1970 and reconstructed in 2002, so it is 55 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 11,300 vehicles a day, roughly 18% of them trucks, projected to reach 24,021 by 2041. The structure is 125 ft (38 m) long and 117 ft wide. If it were closed, the detour would be 3.1 mi (5 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 23 over Arroyo Simi built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2002.
What condition is State Route 23 over Arroyo Simi 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 June 2023.
How much traffic does State Route 23 over Arroyo Simi carry?
About 11,300 vehicles per day (2019 count), of which roughly 18% are trucks.
How long is State Route 23 over Arroyo Simi?
The structure is 125 ft (38 m) long with a longest span of 121 ft (36.8 m) and a deck 117 ft wide.
Who owns State Route 23 over Arroyo Simi?
It is owned by the State Highway Agency.