Interstate 5 over Santa Margarita River
FairSan Diego County, California · 11-SD-005-R56.43L-OCN · Structure no. 57 0007L
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 500 ft
- 3 main spans
- Daily traffic
- 70,250
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 over Santa Margarita River is a concrete continuous box beam or girders - multiple carrying Interstate 5 over Santa Margarita River in San Diego County, California. It was built in 1967, so it is 58 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 70,250 vehicles a day, roughly 6% of them trucks, projected to reach 120,205 by 2041. The structure is 500 ft (152.4 m) long and 68 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 over Santa Margarita River built?
It was built in 1967, making it 58 years old in 2025.
What condition is Interstate 5 over Santa Margarita River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.
How much traffic does Interstate 5 over Santa Margarita River carry?
About 70,250 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is Interstate 5 over Santa Margarita River?
The structure is 500 ft (152.4 m) long with a longest span of 200 ft (61 m) and a deck 68 ft wide.
Who owns Interstate 5 over Santa Margarita River?
It is owned by the State Highway Agency.