Salmon Creek RD over Tannery Creek
FairSonoma County, California · 0.12 MI W Tannery Crk RD · Structure no. 20C0321
- Built
- 1920
- 105 years old, rebuilt 1950
- Condition
- Fair
- inspected March 2024
- Type
- Slab
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 100
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Salmon Creek RD over Tannery Creek is a concrete slab carrying Salmon Creek RD over Tannery Creek in Sonoma County, California. It was built in 1920 and reconstructed in 1950, so it is 105 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 5% of them trucks, projected to reach 132 by 2042. The structure is 30 ft (9.1 m) long and 23 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Salmon Creek RD over Tannery Creek built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1950.
What condition is Salmon Creek RD over Tannery 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 March 2024.
How much traffic does Salmon Creek RD over Tannery Creek carry?
About 100 vehicles per day (2011 count), of which roughly 5% are trucks.
How long is Salmon Creek RD over Tannery Creek?
The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 23 ft wide.
Who owns Salmon Creek RD over Tannery Creek?
It is owned by the County Highway Agency.