Adobe RD over Lichau Creek
GoodSonoma County, California · 0.08 MI E Old Redwood HWY · Structure no. 20C0309
- Built
- 1929
- 96 years old
- Condition
- Good
- inspected April 2024
- Type
- Tee Beam
- Concrete
- Length
- 24 ft
- 1 main span
- Daily traffic
- 2,900
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Adobe RD over Lichau Creek is a concrete tee beam carrying Adobe RD over Lichau Creek in Sonoma 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 2,900 vehicles a day, roughly 5% of them trucks, projected to reach 1,604 by 2046. The structure is 24 ft (7.3 m) long and 29 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Adobe RD over Lichau Creek built?
It was built in 1929, making it 96 years old in 2025.
What condition is Adobe RD over Lichau 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 April 2024.
How much traffic does Adobe RD over Lichau Creek carry?
About 2,900 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Adobe RD over Lichau Creek?
The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 29 ft wide.
Who owns Adobe RD over Lichau Creek?
It is owned by the County Highway Agency.