I-15 & Concordia over Sign Creek
GoodRiverside County, California · 08-RIV-015-27.50 · Structure no. 56 0444
- Built
- 1958
- 67 years old, rebuilt 1980
- Condition
- Good
- inspected February 2024
- Type
- Culvert
- Concrete
- Length
- 32 ft
- 3 main spans
- Daily traffic
- 135,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I-15 & Concordia over Sign Creek is a concrete culvert carrying I-15 & Concordia over Sign Creek in Riverside County, California. It was built in 1958 and reconstructed in 1980, so it is 67 years old, older 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 135,000 vehicles a day, roughly 13% of them trucks, projected to reach 211,259 by 2042. The structure is 32 ft (9.8 m) long and 184 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-15 & Concordia over Sign Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1980.
What condition is I-15 & Concordia over Sign Creek 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 February 2024.
How much traffic does I-15 & Concordia over Sign Creek carry?
About 135,000 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is I-15 & Concordia over Sign Creek?
The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 184 ft wide.
Who owns I-15 & Concordia over Sign Creek?
It is owned by the State Highway Agency.