Interstate 15 over East Fork Cajon Creek
FairSan Bernardino County, California · 08-SBD-015-R20.67 · Structure no. 54 0777
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 187,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 over East Fork Cajon Creek is a concrete box beam or girders - multiple carrying Interstate 15 over East Fork Cajon Creek in San Bernardino County, California. It was built in 1969, so it is 56 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 187,000 vehicles a day, roughly 14% of them trucks, projected to reach 200,000 by 2045. The structure is 42 ft (12.8 m) long and 258 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 15 over East Fork Cajon Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is Interstate 15 over East Fork Cajon Creek 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 May 2024.
How much traffic does Interstate 15 over East Fork Cajon Creek carry?
About 187,000 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is Interstate 15 over East Fork Cajon Creek?
The structure is 42 ft (12.8 m) long with a longest span of 39 ft (11.9 m) and a deck 258 ft wide.
Who owns Interstate 15 over East Fork Cajon Creek?
It is owned by the State Highway Agency.