Sir-Francis Drake over San Geronimo Creek
FairMarin County, California · 7.6 MI E of SR 1 · Structure no. 27C0043
- Built
- 1929
- 96 years old, rebuilt 1993
- Condition
- Fair
- inspected August 2021
- Type
- Tee Beam
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 3,500
- 1998 count
- Owner
- County
- County Highway Agency
About this bridge
Sir-Francis Drake over San Geronimo Creek is a concrete tee beam carrying Sir-Francis Drake over San Geronimo Creek in Marin County, California. It was built in 1929 and reconstructed in 1993, 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 3,500 vehicles a day, roughly 5% of them trucks, projected to reach 6,786 by 2043. The structure is 32 ft (9.8 m) long and 38 ft wide. If it were closed, the detour would be 19.3 mi (31 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 | 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 Sir-Francis Drake over San Geronimo Creek built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1993.
What condition is Sir-Francis Drake over San Geronimo 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 August 2021.
How much traffic does Sir-Francis Drake over San Geronimo Creek carry?
About 3,500 vehicles per day (1998 count), of which roughly 5% are trucks.
How long is Sir-Francis Drake over San Geronimo Creek?
The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 38 ft wide.
Who owns Sir-Francis Drake over San Geronimo Creek?
It is owned by the County Highway Agency.