Petaluma Blvd over San Antonio Creek
FairSonoma County, California · 04-SON-101-0.01 · Structure no. 20 0019Y
- Built
- 1929
- 96 years old, rebuilt 1979
- Condition
- Fair
- inspected March 2024
- Type
- Tee Beam
- Concrete
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 100
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Petaluma Blvd over San Antonio Creek is a concrete tee beam carrying Petaluma Blvd over San Antonio Creek in Sonoma County, California. It was built in 1929 and reconstructed in 1979, so it is 96 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 154 by 2046. The structure is 120 ft (36.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Petaluma Blvd over San Antonio Creek built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1979.
What condition is Petaluma Blvd over San Antonio 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 Petaluma Blvd over San Antonio Creek carry?
About 100 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Petaluma Blvd over San Antonio Creek?
The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 40 ft wide.
Who owns Petaluma Blvd over San Antonio Creek?
It is owned by the State Highway Agency.