Interstate 5 over South Branch Mesa Creek
GoodSan Diego County, California · 11-SD-005-1.90-SD · Structure no. 57 0293
- Built
- 1955
- 70 years old, rebuilt 1973
- Condition
- Good
- inspected March 2023
- Type
- Culvert
- Concrete
- Length
- 58 ft
- 4 main spans
- Daily traffic
- 56,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 over South Branch Mesa Creek is a concrete culvert carrying Interstate 5 over South Branch Mesa Creek in San Diego County, California. It was built in 1955 and reconstructed in 1973, so it is 70 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 56,000 vehicles a day, roughly 3% of them trucks, projected to reach 83,463 by 2040. The structure is 58 ft (17.7 m) long and 145 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 over South Branch Mesa Creek built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1973.
What condition is Interstate 5 over South Branch Mesa 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 March 2023.
How much traffic does Interstate 5 over South Branch Mesa Creek carry?
About 56,000 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is Interstate 5 over South Branch Mesa Creek?
The structure is 58 ft (17.7 m) long with a longest span of 12 ft (3.7 m) and a deck 145 ft wide.
Who owns Interstate 5 over South Branch Mesa Creek?
It is owned by the State Highway Agency.