Interstate 15 SB over Foothill Blvd
FairSan Bernardino County, California · 08-SBD-015-5.28-RCUC · Structure no. 54 0922L
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 236 ft
- 2 main spans
- Daily traffic
- 101,500
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over Foothill Blvd is a prestressed concrete continuous stringer/multi-beam or girder carrying Interstate 15 SB over Foothill Blvd 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 101,500 vehicles a day, roughly 8% of them trucks, projected to reach 120,000 by 2040. The structure is 236 ft (72 m) long and 89 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 15 SB over Foothill Blvd built?
It was built in 1975, making it 50 years old in 2025.
What condition is Interstate 15 SB over Foothill Blvd 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 Foothill Blvd carry?
About 101,500 vehicles per day (2019 count), of which roughly 8% are trucks.
How long is Interstate 15 SB over Foothill Blvd?
The structure is 236 ft (72 m) long with a longest span of 128 ft (39 m) and a deck 89 ft wide.
Who owns Interstate 15 SB over Foothill Blvd?
It is owned by the State Highway Agency.