State Route 116 over Austin Creek
FairSonoma County, California · 04-SON-116-4.93 · Structure no. 20 0012
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 380 ft
- 4 main spans
- Daily traffic
- 5,175
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 116 over Austin Creek is a concrete continuous box beam or girders - multiple carrying State Route 116 over Austin Creek in Sonoma County, California. It was built in 1962, so it is 63 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 6 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 5,175 vehicles a day, projected to reach 5,220 by 2046. The structure is 380 ft (115.8 m) long and 34 ft wide. If it were closed, the detour would be 26.7 mi (43 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 116 over Austin Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is State Route 116 over Austin 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 June 2024.
How much traffic does State Route 116 over Austin Creek carry?
About 5,175 vehicles per day (2016 count).
How long is State Route 116 over Austin Creek?
The structure is 380 ft (115.8 m) long with a longest span of 118 ft (36 m) and a deck 34 ft wide.
Who owns State Route 116 over Austin Creek?
It is owned by the State Highway Agency.