US Highway 101 NB over SR 116 RR Tracks Ditch
FairSonoma County, California · 04-SON-101-3.60-PET · Structure no. 20 0284R
- Built
- 2015
- 10 years old
- Condition
- Fair
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 566 ft
- 4 main spans
- Daily traffic
- 43,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over SR 116 RR Tracks Ditch is a prestressed concrete continuous box beam or girders - multiple carrying US Highway 101 NB over SR 116 RR Tracks Ditch in Sonoma County, California. It was built in 2015, so it is 10 years old, younger 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 43,000 vehicles a day, roughly 5% of them trucks, projected to reach 63,014 by 2044. The structure is 566 ft (172.5 m) long and 80 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 NB over SR 116 RR Tracks Ditch built?
It was built in 2015, making it 10 years old in 2025.
What condition is US Highway 101 NB over SR 116 RR Tracks Ditch 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 US Highway 101 NB over SR 116 RR Tracks Ditch carry?
About 43,000 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is US Highway 101 NB over SR 116 RR Tracks Ditch?
The structure is 566 ft (172.5 m) long with a longest span of 168 ft (51.1 m) and a deck 80 ft wide.
Who owns US Highway 101 NB over SR 116 RR Tracks Ditch?
It is owned by the State Highway Agency.