Main ST over Santiago Creek Channel
GoodOrange County, California · 0.2 MI N/O Route 5 Fwy · Structure no. 55C0055
- Built
- 1918
- 107 years old, rebuilt 1975
- Condition
- Good
- inspected February 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 203 ft
- 5 main spans
- Daily traffic
- 37,000
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Main ST over Santiago Creek Channel is a concrete continuous tee beam carrying Main ST over Santiago Creek Channel in Orange County, California. It was built in 1918 and reconstructed in 1975, so it is 107 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 37,000 vehicles a day, roughly 1% of them trucks, projected to reach 60,054 by 2041. The structure is 203 ft (61.9 m) long and 102 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 Main ST over Santiago Creek Channel built?
It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1975.
What condition is Main ST 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 February 2023.
How much traffic does Main ST over Santiago Creek Channel carry?
About 37,000 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Main ST over Santiago Creek Channel?
The structure is 203 ft (61.9 m) long with a longest span of 64 ft (19.5 m) and a deck 102 ft wide.
Who owns Main ST over Santiago Creek Channel?
It is owned by the City or Municipal Highway Agency.