Cazadero HWY over ST Elmo Creek
GoodSonoma County, California · East of Newmark Ave · Structure no. 20C0429
- Built
- 1957
- 68 years old
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 26 ft
- 2 main spans
- Daily traffic
- 1,550
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Cazadero HWY over ST Elmo Creek is a concrete continuous slab carrying Cazadero HWY over ST Elmo Creek in Sonoma County, California. It was built in 1957, so it is 68 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 1,550 vehicles a day, roughly 4% of them trucks, projected to reach 1,683 by 2046. The structure is 26 ft (7.9 m) long and 30 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cazadero HWY over ST Elmo Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is Cazadero HWY over ST Elmo 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 June 2024.
How much traffic does Cazadero HWY over ST Elmo Creek carry?
About 1,550 vehicles per day (2015 count), of which roughly 4% are trucks.
How long is Cazadero HWY over ST Elmo Creek?
The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.
Who owns Cazadero HWY over ST Elmo Creek?
It is owned by the County Highway Agency.