Interstate 15 SB over Baseline Road
GoodSan Bernardino County, California · 08-SBD-015-6.71-RCUC · Structure no. 54 0974L
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 443 ft
- 3 main spans
- Daily traffic
- 80,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over Baseline Road is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 15 SB over Baseline Road in San Bernardino County, California. It was built in 1976, so it is 49 years old, younger 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 80,000 vehicles a day, roughly 8% of them trucks, projected to reach 100,000 by 2040. The structure is 443 ft (135 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
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 15 SB over Baseline Road built?
It was built in 1976, making it 49 years old in 2025.
What condition is Interstate 15 SB over Baseline Road 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 March 2023.
How much traffic does Interstate 15 SB over Baseline Road carry?
About 80,000 vehicles per day (2019 count), of which roughly 8% are trucks.
How long is Interstate 15 SB over Baseline Road?
The structure is 443 ft (135 m) long with a longest span of 172 ft (52.4 m) and a deck 69 ft wide.
Who owns Interstate 15 SB over Baseline Road?
It is owned by the State Highway Agency.