W Soda Rock Lane over Hillside
FairSonoma County, California · 1 MI SE Alexander Valy RD · Structure no. 20C0415
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 59 ft
- 3 main spans
- Daily traffic
- 100
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
W Soda Rock Lane over Hillside is a steel stringer/multi-beam or girder carrying W Soda Rock Lane over Hillside in Sonoma County, California. It was built in 1968, so it is 57 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 5 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 126 by 2040. The structure is 59 ft (18 m) long and 9 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was W Soda Rock Lane over Hillside built?
It was built in 1968, making it 57 years old in 2025.
What condition is W Soda Rock Lane over Hillside 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 May 2023.
How much traffic does W Soda Rock Lane over Hillside carry?
About 100 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is W Soda Rock Lane over Hillside?
The structure is 59 ft (18 m) long with a longest span of 19 ft (5.8 m) and a deck 9 ft wide.
Who owns W Soda Rock Lane over Hillside?
It is owned by the County Highway Agency.