Sir-Francis Drake over Lagunitas Creek
FairMarin County, California · 5.9 MI E of SH 1 · Structure no. 27C0042
- Built
- 1929
- 96 years old
- Condition
- Fair
- inspected August 2023
- Type
- Tee Beam
- Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 2,000
- 1975 count
- Owner
- County
- County Highway Agency
About this bridge
Sir-Francis Drake over Lagunitas Creek is a concrete tee beam carrying Sir-Francis Drake over Lagunitas 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 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 2,000 vehicles a day, roughly 10% of them trucks, projected to reach 6,201 by 2043. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 16.8 mi (27 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 Lagunitas Creek built?
It was built in 1929, making it 96 years old in 2025.
What condition is Sir-Francis Drake over Lagunitas 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 2023.
How much traffic does Sir-Francis Drake over Lagunitas Creek carry?
About 2,000 vehicles per day (1975 count), of which roughly 10% are trucks.
How long is Sir-Francis Drake over Lagunitas Creek?
The structure is 60 ft (18.3 m) long with a longest span of 56 ft (17.2 m) and a deck 27 ft wide.
Who owns Sir-Francis Drake over Lagunitas Creek?
It is owned by the County Highway Agency.