Fallon-Two Rock RD over Estero De San Antonio
GoodMarin County, California · 0.02 MI E SR 1 · Structure no. 27C0120
- Built
- 1932
- 93 years old
- Condition
- Good
- inspected September 2024
- Type
- Tee Beam
- Concrete
- Length
- 22 ft
- 1 main span
- Daily traffic
- 249
- 1973 count
- Owner
- County
- County Highway Agency
About this bridge
Fallon-Two Rock RD over Estero De San Antonio is a concrete tee beam carrying Fallon-Two Rock RD over Estero De San Antonio in Marin County, California. It was built in 1932, so it is 93 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 249 vehicles a day, roughly 2% of them trucks, projected to reach 389 by 2046. The structure is 22 ft (6.7 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Fallon-Two Rock RD over Estero De San Antonio built?
It was built in 1932, making it 93 years old in 2025.
What condition is Fallon-Two Rock RD over Estero De San Antonio 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 2024.
How much traffic does Fallon-Two Rock RD over Estero De San Antonio carry?
About 249 vehicles per day (1973 count), of which roughly 2% are trucks.
How long is Fallon-Two Rock RD over Estero De San Antonio?
The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 29 ft wide.
Who owns Fallon-Two Rock RD over Estero De San Antonio?
It is owned by the County Highway Agency.