State Route 12 over Stuart Creek
FairSonoma County, California · 04-SON-012-30.80 · Structure no. 20 0025
- Built
- 1924
- 101 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 14,200
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 12 over Stuart Creek is a concrete tee beam carrying State Route 12 over Stuart Creek in Sonoma County, California. It was built in 1924, so it is 101 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 14,200 vehicles a day, roughly 4% of them trucks, projected to reach 22,518 by 2046. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 12 over Stuart Creek built?
It was built in 1924, making it 101 years old in 2025.
What condition is State Route 12 over Stuart 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 2024.
How much traffic does State Route 12 over Stuart Creek carry?
About 14,200 vehicles per day (2014 count), of which roughly 4% are trucks.
How long is State Route 12 over Stuart Creek?
The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.
Who owns State Route 12 over Stuart Creek?
It is owned by the State Highway Agency.