U.S. Highway 101 over Santa Margarita Creek
GoodSan Luis Obispo County, California · 05-SLO-101-36.58 · Structure no. 49 0007
- Built
- 1916
- 109 years old, rebuilt 1977
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Concrete
- Length
- 22 ft
- 1 main span
- Daily traffic
- 43,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Santa Margarita Creek is a concrete culvert carrying U.S. Highway 101 over Santa Margarita Creek in San Luis Obispo County, California. It was built in 1916 and reconstructed in 1977, so it is 109 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 43,000 vehicles a day, roughly 8% of them trucks, projected to reach 85,910 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 29.2 mi (47 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Santa Margarita Creek built?
It was built in 1916, making it 109 years old in 2025. It was reconstructed in 1977.
What condition is U.S. Highway 101 over Santa Margarita 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 May 2023.
How much traffic does U.S. Highway 101 over Santa Margarita Creek carry?
About 43,000 vehicles per day (2009 count), of which roughly 8% are trucks.
How long is U.S. Highway 101 over Santa Margarita Creek?
The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).
Who owns U.S. Highway 101 over Santa Margarita Creek?
It is owned by the State Highway Agency.