Chapman Avenue over Santiago Creek Channel
GoodOrange County, California · 0.1 MI E/O Route 55 Fwy · Structure no. 55C0057
- Built
- 1961
- 64 years old, rebuilt 1967
- Condition
- Good
- inspected April 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 266 ft
- 5 main spans
- Daily traffic
- 54,900
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Chapman Avenue over Santiago Creek Channel is a concrete continuous tee beam carrying Chapman Avenue over Santiago Creek Channel in Orange County, California. It was built in 1961 and reconstructed in 1967, so it is 64 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 54,900 vehicles a day, roughly 1% of them trucks, projected to reach 132,010 by 2045. The structure is 266 ft (81.2 m) long and 153 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 Chapman Avenue over Santiago Creek Channel built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1967.
What condition is Chapman Avenue over Santiago Creek Channel 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 Chapman Avenue over Santiago Creek Channel carry?
About 54,900 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Chapman Avenue over Santiago Creek Channel?
The structure is 266 ft (81.2 m) long with a longest span of 57 ft (17.4 m) and a deck 153 ft wide.
Who owns Chapman Avenue over Santiago Creek Channel?
It is owned by the City or Municipal Highway Agency.