W10-S15 Conn Ramp over Day Canyon Channel
GoodSan Bernardino County, California · 08-SBD-010-10.12-ONT · Structure no. 54 0351F
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 130 ft
- 1 main span
- Daily traffic
- 29,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
W10-S15 Conn Ramp over Day Canyon Channel is a prestressed concrete box beam or girders - multiple carrying W10-S15 Conn Ramp over Day Canyon Channel in San Bernardino County, California. It was built in 1975, so it is 50 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 29,000 vehicles a day, roughly 11% of them trucks, projected to reach 40,000 by 2043. The structure is 130 ft (39.6 m) long and 38 ft wide. If it were closed, the detour would be 2.5 mi (4 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. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was W10-S15 Conn Ramp over Day Canyon Channel built?
It was built in 1975, making it 50 years old in 2025.
What condition is W10-S15 Conn Ramp over Day Canyon Channel 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 May 2023.
How much traffic does W10-S15 Conn Ramp over Day Canyon Channel carry?
About 29,000 vehicles per day (2021 count), of which roughly 11% are trucks.
How long is W10-S15 Conn Ramp over Day Canyon Channel?
The structure is 130 ft (39.6 m) long with a longest span of 129 ft (39.3 m) and a deck 38 ft wide.
Who owns W10-S15 Conn Ramp over Day Canyon Channel?
It is owned by the State Highway Agency.