Santa Rosa Road over US Highway 101
FairSan Luis Obispo County, California · 05-SLO-101-44.01-ATAS · Structure no. 49 0160
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 210 ft
- 4 main spans
- Daily traffic
- 560
- 2005 count
- Owner
- State
- State Highway Agency
About this bridge
Santa Rosa Road over US Highway 101 is a steel stringer/multi-beam or girder carrying Santa Rosa Road over US Highway 101 in San Luis Obispo County, California. It was built in 1956, so it is 69 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 560 vehicles a day, roughly 5% of them trucks, projected to reach 962 by 2041. The structure is 210 ft (64 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 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 Santa Rosa Road over US Highway 101 built?
It was built in 1956, making it 69 years old in 2025.
What condition is Santa Rosa Road over US Highway 101 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 Santa Rosa Road over US Highway 101 carry?
About 560 vehicles per day (2005 count), of which roughly 5% are trucks.
How long is Santa Rosa Road over US Highway 101?
The structure is 210 ft (64 m) long with a longest span of 68 ft (20.7 m) and a deck 37 ft wide.
Who owns Santa Rosa Road over US Highway 101?
It is owned by the State Highway Agency.