US HWY 101 On-Ramp over Washington Creek
GoodSonoma County, California · 04-SON-101-4.78-PET · Structure no. 20 0163S
- Built
- 2013
- 12 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 120 ft
- 1 main span
- Daily traffic
- 20,000
- 2013 count
- Owner
- State
- State Highway Agency
About this bridge
US HWY 101 On-Ramp over Washington Creek is a prestressed concrete stringer/multi-beam or girder carrying US HWY 101 On-Ramp over Washington Creek in Sonoma County, California. It was built in 2013, so it is 12 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 20,000 vehicles a day, roughly 8% of them trucks, projected to reach 31,222 by 2046. The structure is 120 ft (36.5 m) long and 38 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US HWY 101 On-Ramp over Washington Creek built?
It was built in 2013, making it 12 years old in 2025.
What condition is US HWY 101 On-Ramp over Washington Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.
How much traffic does US HWY 101 On-Ramp over Washington Creek carry?
About 20,000 vehicles per day (2013 count), of which roughly 8% are trucks.
How long is US HWY 101 On-Ramp over Washington Creek?
The structure is 120 ft (36.5 m) long with a longest span of 120 ft (36.5 m) and a deck 38 ft wide.
Who owns US HWY 101 On-Ramp over Washington Creek?
It is owned by the State Highway Agency.