Old Redwood HWY over Sotoyome Creek
FairSonoma County, California · 0.7 MI SE Eastside RD · Structure no. 20C0089
- Built
- 1913
- 112 years old, rebuilt 1925
- Condition
- Fair
- inspected May 2023
- Type
- Tee Beam
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 5,900
- 2009 count
- Owner
- County
- County Highway Agency
About this bridge
Old Redwood HWY over Sotoyome Creek is a concrete tee beam carrying Old Redwood HWY over Sotoyome Creek in Sonoma County, California. It was built in 1913 and reconstructed in 1925, so it is 112 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 5,900 vehicles a day, roughly 6% of them trucks, projected to reach 6,141 by 2045. The structure is 23 ft (7 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Redwood HWY over Sotoyome Creek built?
It was built in 1913, making it 112 years old in 2025. It was reconstructed in 1925.
What condition is Old Redwood HWY over Sotoyome Creek 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 Old Redwood HWY over Sotoyome Creek carry?
About 5,900 vehicles per day (2009 count), of which roughly 6% are trucks.
How long is Old Redwood HWY over Sotoyome Creek?
The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 35 ft wide.
Who owns Old Redwood HWY over Sotoyome Creek?
It is owned by the County Highway Agency.