State Route 1 over Arroyo Grande Creek
GoodSan Luis Obispo County, California · 05-SLO-001-10.94 · Structure no. 49 0019
- Built
- 1956
- 69 years old, rebuilt 1984
- Condition
- Good
- inspected September 2023
- Type
- Slab
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 6,200
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Arroyo Grande Creek is a concrete continuous slab carrying State Route 1 over Arroyo Grande Creek in San Luis Obispo County, California. It was built in 1956 and reconstructed in 1984, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 6,200 vehicles a day, roughly 6% of them trucks, projected to reach 3,952 by 2043. The structure is 123 ft (37.5 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Arroyo Grande Creek built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1984.
What condition is State Route 1 over Arroyo Grande Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does State Route 1 over Arroyo Grande Creek carry?
About 6,200 vehicles per day (2009 count), of which roughly 6% are trucks.
How long is State Route 1 over Arroyo Grande Creek?
The structure is 123 ft (37.5 m) long with a longest span of 40 ft (12.2 m) and a deck 47 ft wide.
Who owns State Route 1 over Arroyo Grande Creek?
It is owned by the State Highway Agency.