State Route 116 over Adobe Creek
FairSonoma County, California · 04-SON-116-36.19 · Structure no. 20 0062
- Built
- 1954
- 71 years old, rebuilt 1997
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 33 ft
- 2 main spans
- Daily traffic
- 34,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 116 over Adobe Creek is a concrete continuous slab carrying State Route 116 over Adobe Creek in Sonoma County, California. It was built in 1954 and reconstructed in 1997, so it is 71 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 34,000 vehicles a day, roughly 11% of them trucks, projected to reach 50,982 by 2046. The structure is 33 ft (10.1 m) long and 68 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 116 over Adobe Creek built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1997.
What condition is State Route 116 over Adobe 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 September 2024.
How much traffic does State Route 116 over Adobe Creek carry?
About 34,000 vehicles per day (2014 count), of which roughly 11% are trucks.
How long is State Route 116 over Adobe Creek?
The structure is 33 ft (10.1 m) long with a longest span of 19 ft (5.9 m) and a deck 68 ft wide.
Who owns State Route 116 over Adobe Creek?
It is owned by the State Highway Agency.