State Route 56 over Interstate 15
FairSan Diego County, California · 11-SD-056-8.96 · Structure no. 57 1130
- Built
- 2007
- 18 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 416 ft
- 3 main spans
- Daily traffic
- 70,000
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 56 over Interstate 15 is a prestressed concrete continuous box beam or girders - multiple carrying State Route 56 over Interstate 15 in San Diego County, California. It was built in 2007, so it is 18 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 70,000 vehicles a day, roughly 3% of them trucks, projected to reach 42,990 by 2045. The structure is 416 ft (126.8 m) long and 147 ft wide.
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 State Route 56 over Interstate 15 built?
It was built in 2007, making it 18 years old in 2025.
What condition is State Route 56 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 May 2024.
How much traffic does State Route 56 over Interstate 15 carry?
About 70,000 vehicles per day (2016 count), of which roughly 3% are trucks.
How long is State Route 56 over Interstate 15?
The structure is 416 ft (126.8 m) long with a longest span of 143 ft (43.6 m) and a deck 147 ft wide.
Who owns State Route 56 over Interstate 15?
It is owned by the State Highway Agency.