State Route 1 over Stenner Creek
FairSan Luis Obispo County, California · 05-SLO-001-17.05-SLO · Structure no. 49 0123
- Built
- 1920
- 105 years old, rebuilt 1968
- Condition
- Fair
- inspected September 2023
- Type
- Arch - Deck
- Masonry
- Length
- 50 ft
- 1 main span
- Daily traffic
- 25,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Stenner Creek is a masonry arch - deck carrying State Route 1 over Stenner Creek in San Luis Obispo County, California. It was built in 1920 and reconstructed in 1968, so it is 105 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 25,000 vehicles a day, roughly 4% of them trucks, projected to reach 26,417 by 2045. The structure is 50 ft (15.2 m) long and 86 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Stenner Creek built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1968.
What condition is State Route 1 over Stenner 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 September 2023.
How much traffic does State Route 1 over Stenner Creek carry?
About 25,000 vehicles per day (2009 count), of which roughly 4% are trucks.
How long is State Route 1 over Stenner Creek?
The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 86 ft wide.
Who owns State Route 1 over Stenner Creek?
It is owned by the State Highway Agency.