US Highway 101 NB over UP RR & AMTRAK
FairSan Luis Obispo County, California · 05-SLO-101-35.60 · Structure no. 49 0060R
- Built
- 1991
- 34 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 678 ft
- 5 main spans
- Daily traffic
- 30,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over UP RR & AMTRAK is a prestressed concrete continuous box beam or girders - multiple carrying US Highway 101 NB over UP RR & AMTRAK in San Luis Obispo County, California. It was built in 1991, so it is 34 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 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 30,000 vehicles a day, projected to reach 42,954 by 2043. The structure is 678 ft (206.7 m) long and 40 ft wide. If it were closed, the detour would be 39.8 mi (64 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 NB over UP RR & AMTRAK built?
It was built in 1991, making it 34 years old in 2025.
What condition is US Highway 101 NB over UP RR & AMTRAK 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 US Highway 101 NB over UP RR & AMTRAK carry?
About 30,000 vehicles per day (2009 count).
How long is US Highway 101 NB over UP RR & AMTRAK?
The structure is 678 ft (206.7 m) long with a longest span of 164 ft (50 m) and a deck 40 ft wide.
Who owns US Highway 101 NB over UP RR & AMTRAK?
It is owned by the State Highway Agency.