U.S. Highway 101 over Whitehorse Draw
GoodSan Luis Obispo County, California · 05-SLO-101-53.17 · Structure no. 49 0137
- Built
- 1952
- 73 years old, rebuilt 1974
- Condition
- Good
- inspected October 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 54,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Whitehorse Draw is a concrete continuous culvert carrying U.S. Highway 101 over Whitehorse Draw in San Luis Obispo County, California. It was built in 1952 and reconstructed in 1974, so it is 73 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 54,000 vehicles a day, roughly 9% of them trucks, projected to reach 73,119 by 2045. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 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 U.S. Highway 101 over Whitehorse Draw built?
It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1974.
What condition is U.S. Highway 101 over Whitehorse Draw 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 October 2023.
How much traffic does U.S. Highway 101 over Whitehorse Draw carry?
About 54,000 vehicles per day (2009 count), of which roughly 9% are trucks.
How long is U.S. Highway 101 over Whitehorse Draw?
The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).
Who owns U.S. Highway 101 over Whitehorse Draw?
It is owned by the State Highway Agency.