Lawndale RD over Sonoma Creek
GoodSonoma County, California · Warm Springs Road · Structure no. 20C0270
- Built
- 1900
- 125 years old, rebuilt 1940
- Condition
- Good
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 67 ft
- 3 main spans
- Daily traffic
- 550
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Lawndale RD over Sonoma Creek is a concrete continuous slab carrying Lawndale RD over Sonoma Creek in Sonoma County, California. It was built in 1900 and reconstructed in 1940, so it is 125 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 550 vehicles a day, roughly 5% of them trucks, projected to reach 1,017 by 2040. The structure is 67 ft (20.4 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 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 Lawndale RD over Sonoma Creek built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1940.
What condition is Lawndale RD over Sonoma 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 May 2023.
How much traffic does Lawndale RD over Sonoma Creek carry?
About 550 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Lawndale RD over Sonoma Creek?
The structure is 67 ft (20.4 m) long with a longest span of 29 ft (8.7 m) and a deck 25 ft wide.
Who owns Lawndale RD over Sonoma Creek?
It is owned by the County Highway Agency.