State Route 116 over Russian River
FairSonoma County, California · 04-SON-116-10.46 · Structure no. 20 0072
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 257 ft
- 13 main spans
- Daily traffic
- 8,450
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 116 over Russian River is a concrete continuous slab carrying State Route 116 over Russian River in Sonoma County, California. It was built in 1940, so it is 85 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 8,450 vehicles a day, roughly 4% of them trucks, projected to reach 8,569 by 2044. The structure is 257 ft (78.3 m) long and 31 ft wide. If it were closed, the detour would be 24.2 mi (39 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 State Route 116 over Russian River built?
It was built in 1940, making it 85 years old in 2025.
What condition is State Route 116 over Russian River 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 June 2024.
How much traffic does State Route 116 over Russian River carry?
About 8,450 vehicles per day (2016 count), of which roughly 4% are trucks.
How long is State Route 116 over Russian River?
The structure is 257 ft (78.3 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.
Who owns State Route 116 over Russian River?
It is owned by the State Highway Agency.