Interstate 15 SB over Cajon Creek / Cajon Blvd
GoodSan Bernardino County, California · 08-SBD-015-16.07 · Structure no. 54 0781L
- Built
- 1969
- 56 years old, rebuilt 2016
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 691 ft
- 6 main spans
- Daily traffic
- 69,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over Cajon Creek / Cajon Blvd is a concrete continuous box beam or girders - multiple carrying Interstate 15 SB over Cajon Creek / Cajon Blvd in San Bernardino County, California. It was built in 1969 and reconstructed in 2016, 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 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 69,500 vehicles a day, roughly 11% of them trucks, projected to reach 93,000 by 2042. The structure is 691 ft (210.6 m) long and 99 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 15 SB over Cajon Creek / Cajon Blvd built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2016.
What condition is Interstate 15 SB over Cajon Creek / Cajon Blvd 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 January 2025.
How much traffic does Interstate 15 SB over Cajon Creek / Cajon Blvd carry?
About 69,500 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is Interstate 15 SB over Cajon Creek / Cajon Blvd?
The structure is 691 ft (210.6 m) long with a longest span of 138 ft (42.1 m) and a deck 99 ft wide.
Who owns Interstate 15 SB over Cajon Creek / Cajon Blvd?
It is owned by the State Highway Agency.