US Highway 101 NB over San Luis Obispo Creek
FairSan Luis Obispo County, California · 05-SLO-101-R21.49 · Structure no. 49 0014R
- Built
- 1940
- 85 years old, rebuilt 1977
- Condition
- Fair
- inspected July 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 570 ft
- 16 main spans
- Daily traffic
- 31,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over San Luis Obispo Creek is a concrete continuous tee beam carrying US Highway 101 NB over San Luis Obispo Creek in San Luis Obispo County, California. It was built in 1940 and reconstructed in 1977, so it is 85 years old, older 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 5 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 31,000 vehicles a day, roughly 9% of them trucks, projected to reach 47,278 by 2044. The structure is 570 ft (173.7 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 NB over San Luis Obispo Creek built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1977.
What condition is US Highway 101 NB over San Luis Obispo Creek 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 July 2024.
How much traffic does US Highway 101 NB over San Luis Obispo Creek carry?
About 31,000 vehicles per day (2009 count), of which roughly 9% are trucks.
How long is US Highway 101 NB over San Luis Obispo Creek?
The structure is 570 ft (173.7 m) long with a longest span of 45 ft (13.7 m) and a deck 42 ft wide.
Who owns US Highway 101 NB over San Luis Obispo Creek?
It is owned by the State Highway Agency.