Mrshal Petaluma RD over San Antonio Creek
GoodMarin County, California · 0.27 MI E Chileno Vly RD · Structure no. 27C0109
- Built
- 1929
- 96 years old
- Condition
- Good
- inspected July 2024
- Type
- Tee Beam
- Concrete
- Length
- 25 ft
- 1 main span
- Daily traffic
- 328
- 1974 count
- Owner
- County
- County Highway Agency
About this bridge
Mrshal Petaluma RD over San Antonio Creek is a concrete tee beam carrying Mrshal Petaluma RD over San Antonio Creek in Marin County, California. It was built in 1929, 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 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 328 vehicles a day, roughly 3% of them trucks, projected to reach 547 by 2042. The structure is 25 ft (7.6 m) long and 27 ft wide. If it were closed, the detour would be 14.3 mi (23 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 Mrshal Petaluma RD over San Antonio Creek built?
It was built in 1929, making it 96 years old in 2025.
What condition is Mrshal Petaluma RD over San Antonio 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 July 2024.
How much traffic does Mrshal Petaluma RD over San Antonio Creek carry?
About 328 vehicles per day (1974 count), of which roughly 3% are trucks.
How long is Mrshal Petaluma RD over San Antonio Creek?
The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 27 ft wide.
Who owns Mrshal Petaluma RD over San Antonio Creek?
It is owned by the County Highway Agency.