Interstate 15 SB over Lytle Creek
FairSan Bernardino County, California · 08-SBD-015-13.08 · Structure no. 54 0982L
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected February 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 1,981 ft
- 18 main spans
- Daily traffic
- 69,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over Lytle Creek is a concrete continuous box beam or girders - multiple carrying Interstate 15 SB over Lytle Creek 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 69,000 vehicles a day, roughly 11% of them trucks, projected to reach 96,000 by 2040. The structure is 1,981 ft (603.8 m) long and 69 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 SB over Lytle Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is Interstate 15 SB over Lytle 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 February 2023.
How much traffic does Interstate 15 SB over Lytle Creek carry?
About 69,000 vehicles per day (2019 count), of which roughly 11% are trucks.
How long is Interstate 15 SB over Lytle Creek?
The structure is 1,981 ft (603.8 m) long with a longest span of 112 ft (34.1 m) and a deck 69 ft wide.
Who owns Interstate 15 SB over Lytle Creek?
It is owned by the State Highway Agency.