Summit Avenue over Interstate 15
FairSan Bernardino County, California · 08-SBD-015-9.60-RCUC · Structure no. 54 0978
- Built
- 1999
- 26 years old
- Condition
- Fair
- inspected February 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 393 ft
- 2 main spans
- Daily traffic
- 5,001
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Summit Avenue over Interstate 15 is a prestressed concrete continuous box beam or girders - multiple carrying Summit Avenue over Interstate 15 in San Bernardino County, California. It was built in 1999, so it is 26 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 5,001 vehicles a day, roughly 7% of them trucks, projected to reach 8,000 by 2040. The structure is 393 ft (119.8 m) long and 86 ft wide. If it were closed, the detour would be 5 mi (8 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Summit Avenue over Interstate 15 built?
It was built in 1999, making it 26 years old in 2025.
What condition is Summit Avenue over Interstate 15 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 Summit Avenue over Interstate 15 carry?
About 5,001 vehicles per day (2021 count), of which roughly 7% are trucks.
How long is Summit Avenue over Interstate 15?
The structure is 393 ft (119.8 m) long with a longest span of 210 ft (64 m) and a deck 86 ft wide.
Who owns Summit Avenue over Interstate 15?
It is owned by the State Highway Agency.