Interstate 15 SB over Day Canyon Channel
FairSan Bernardino County, California · 08-SBD-015-4.47-RCUC · Structure no. 54 0920L
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 314 ft
- 3 main spans
- Daily traffic
- 98,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over Day Canyon Channel is a concrete continuous box beam or girders - multiple carrying Interstate 15 SB over Day Canyon Channel in San Bernardino County, California. It was built in 1975, so it is 50 years old, younger 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 98,000 vehicles a day, roughly 10% of them trucks, projected to reach 136,200 by 2042. The structure is 314 ft (95.7 m) long and 68 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 15 SB over Day Canyon Channel built?
It was built in 1975, making it 50 years old in 2025.
What condition is Interstate 15 SB over Day Canyon Channel 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 March 2023.
How much traffic does Interstate 15 SB over Day Canyon Channel carry?
About 98,000 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Interstate 15 SB over Day Canyon Channel?
The structure is 314 ft (95.7 m) long with a longest span of 111 ft (33.8 m) and a deck 68 ft wide.
Who owns Interstate 15 SB over Day Canyon Channel?
It is owned by the State Highway Agency.