Interstate 15 over San Diego River
FairSan Diego County, California · 11-SD-015-R6.26-SD · Structure no. 57 0501
- Built
- 1960
- 65 years old, rebuilt 1984
- Condition
- Fair
- inspected July 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 916 ft
- 18 main spans
- Daily traffic
- 244,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 over San Diego River is a concrete continuous tee beam carrying Interstate 15 over San Diego River in San Diego County, California. It was built in 1960 and reconstructed in 1984, so it is 65 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 5% of them trucks, projected to reach 299,733 by 2041. The structure is 916 ft (279.2 m) long and 174 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 15 over San Diego River built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1984.
What condition is Interstate 15 over San Diego 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 July 2023.
How much traffic does Interstate 15 over San Diego River carry?
About 244,000 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is Interstate 15 over San Diego River?
The structure is 916 ft (279.2 m) long with a longest span of 59 ft (18 m) and a deck 174 ft wide.
Who owns Interstate 15 over San Diego River?
It is owned by the State Highway Agency.