W10-N15 Conn Ramp over Day Canyon Channel
FairSan Bernardino County, California · 08-SBD-010-10.13-ONT · Structure no. 54 0927F
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 110 ft
- 1 main span
- Daily traffic
- 15,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
W10-N15 Conn Ramp over Day Canyon Channel is a prestressed concrete box beam or girders - multiple carrying W10-N15 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 fair condition with a lowest component rating of 6 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 15,000 vehicles a day, roughly 11% of them trucks, projected to reach 20,000 by 2043. The structure is 110 ft (33.5 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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-N15 Conn Ramp over Day Canyon Channel built?
It was built in 1975, making it 50 years old in 2025.
What condition is W10-N15 Conn Ramp over Day Canyon Channel 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 2023.
How much traffic does W10-N15 Conn Ramp over Day Canyon Channel carry?
About 15,000 vehicles per day (2021 count), of which roughly 11% are trucks.
How long is W10-N15 Conn Ramp over Day Canyon Channel?
The structure is 110 ft (33.5 m) long with a longest span of 109 ft (33.2 m) and a deck 30 ft wide.
Who owns W10-N15 Conn Ramp over Day Canyon Channel?
It is owned by the State Highway Agency.