US Highway 101 NB over Grand Ave
FairSan Luis Obispo County, California · 05-SLO-101-29.77-SLO · Structure no. 49 0084R
- Built
- 1953
- 72 years old, rebuilt 1987
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 185 ft
- 4 main spans
- Daily traffic
- 31,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over Grand Ave is a concrete continuous box beam or girders - multiple carrying US Highway 101 NB over Grand Ave in San Luis Obispo County, California. It was built in 1953 and reconstructed in 1987, so it is 72 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 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 31,000 vehicles a day, roughly 9% of them trucks, projected to reach 48,301 by 2044. The structure is 185 ft (56.4 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 NB over Grand Ave built?
It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1987.
What condition is US Highway 101 NB over Grand Ave 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 Grand Ave carry?
About 31,000 vehicles per day (2009 count), of which roughly 9% are trucks.
How long is US Highway 101 NB over Grand Ave?
The structure is 185 ft (56.4 m) long with a longest span of 54 ft (16.6 m) and a deck 42 ft wide.
Who owns US Highway 101 NB over Grand Ave?
It is owned by the State Highway Agency.