Interstate 15 SB over Rainbow Creek
FairSan Diego County, California · 11-SD-015-R52.49 · Structure no. 57 0937L
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 224 ft
- 3 main spans
- Daily traffic
- 72,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over Rainbow Creek is a concrete continuous box beam or girders - multiple carrying Interstate 15 SB over Rainbow Creek in San Diego County, California. It was built in 1985, so it is 40 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 72,000 vehicles a day, roughly 4% of them trucks, projected to reach 144,000 by 2045. The structure is 224 ft (68.3 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 Rainbow Creek built?
It was built in 1985, making it 40 years old in 2025.
What condition is Interstate 15 SB over Rainbow 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 June 2024.
How much traffic does Interstate 15 SB over Rainbow Creek carry?
About 72,000 vehicles per day (2020 count), of which roughly 4% are trucks.
How long is Interstate 15 SB over Rainbow Creek?
The structure is 224 ft (68.3 m) long with a longest span of 86 ft (26.2 m) and a deck 69 ft wide.
Who owns Interstate 15 SB over Rainbow Creek?
It is owned by the State Highway Agency.