Lagunitas RD over San Geronimo Creek
GoodMarin County, California · .03 MI S SR Frncs Drake B · Structure no. 27C0130
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected August 2021
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 66 ft
- 3 main spans
- Daily traffic
- 200
- 1973 count
- Owner
- County
- County Highway Agency
About this bridge
Lagunitas RD over San Geronimo Creek is a prestressed concrete tee beam carrying Lagunitas RD over San Geronimo Creek in Marin County, California. It was built in 1964, so it is 61 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 451 by 2043. The structure is 66 ft (20.2 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 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 Lagunitas RD over San Geronimo Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is Lagunitas RD over San Geronimo 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 August 2021.
How much traffic does Lagunitas RD over San Geronimo Creek carry?
About 200 vehicles per day (1973 count), of which roughly 5% are trucks.
How long is Lagunitas RD over San Geronimo Creek?
The structure is 66 ft (20.2 m) long with a longest span of 31 ft (9.4 m) and a deck 25 ft wide.
Who owns Lagunitas RD over San Geronimo Creek?
It is owned by the County Highway Agency.