State Route 1 over San Simeon Creek
FairSan Luis Obispo County, California · 05-SLO-001-52.92 · Structure no. 49 0046
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 423 ft
- 4 main spans
- Daily traffic
- 5,300
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over San Simeon Creek is a prestressed concrete continuous box beam or girders - multiple carrying State Route 1 over San Simeon Creek in San Luis Obispo County, California. It was built in 1984, so it is 41 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 5,300 vehicles a day, roughly 2% of them trucks, projected to reach 7,133 by 2045. The structure is 423 ft (128.9 m) long and 44 ft wide. If it were closed, the detour would be 123.7 mi (199 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over San Simeon Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is State Route 1 over San Simeon 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 San Simeon Creek carry?
About 5,300 vehicles per day (2009 count), of which roughly 2% are trucks.
How long is State Route 1 over San Simeon Creek?
The structure is 423 ft (128.9 m) long with a longest span of 120 ft (36.6 m) and a deck 44 ft wide.
Who owns State Route 1 over San Simeon Creek?
It is owned by the State Highway Agency.