Interstate 5 over San Dieguito River
FairSan Diego County, California · 11-SD-005-R35.66-SD · Structure no. 57 0488
- Built
- 1964
- 61 years old, rebuilt 1994
- Condition
- Fair
- inspected January 2025
- Type
- Tee Beam
- Concrete Continuous
- Length
- 650 ft
- 7 main spans
- Daily traffic
- 244,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 over San Dieguito River is a concrete continuous tee beam carrying Interstate 5 over San Dieguito River in San Diego County, California. It was built in 1964 and reconstructed in 1994, so it is 61 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 244,000 vehicles a day, roughly 8% of them trucks, projected to reach 290,038 by 2047. The structure is 650 ft (198.1 m) long and 179 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 over San Dieguito River built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.
What condition is Interstate 5 over San Dieguito 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 January 2025.
How much traffic does Interstate 5 over San Dieguito River carry?
About 244,000 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is Interstate 5 over San Dieguito River?
The structure is 650 ft (198.1 m) long with a longest span of 67 ft (20.4 m) and a deck 179 ft wide.
Who owns Interstate 5 over San Dieguito River?
It is owned by the State Highway Agency.