Graton RD over Atascadero Creek
FairSonoma County, California · 0.9 MI W SH 116 · Structure no. 20C0136
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 82 ft
- 2 main spans
- Daily traffic
- 3,409
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Graton RD over Atascadero Creek is a concrete continuous slab carrying Graton RD over Atascadero Creek in Sonoma County, California. It was built in 1967, so it is 58 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 6 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 3,409 vehicles a day, roughly 1% of them trucks, projected to reach 3,726 by 2045. The structure is 82 ft (25 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Graton RD over Atascadero Creek built?
It was built in 1967, making it 58 years old in 2025.
What condition is Graton RD over Atascadero 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 March 2024.
How much traffic does Graton RD over Atascadero Creek carry?
About 3,409 vehicles per day (2011 count), of which roughly 1% are trucks.
How long is Graton RD over Atascadero Creek?
The structure is 82 ft (25 m) long with a longest span of 40 ft (12.2 m) and a deck 40 ft wide.
Who owns Graton RD over Atascadero Creek?
It is owned by the County Highway Agency.