US Highway 101 over Petaluma River
GoodSonoma County, California · 04-SON-101-3.23-PET · Structure no. 20 0295
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 907 ft
- 5 main spans
- Daily traffic
- 76,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 over Petaluma River is a prestressed concrete continuous stringer/multi-beam or girder carrying US Highway 101 over Petaluma River in Sonoma County, California. It was built in 2016, so it is 9 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 76,000 vehicles a day, roughly 6% of them trucks, projected to reach 111,159 by 2046. The structure is 907 ft (276.5 m) long and 117 ft wide. If it were closed, the detour would be 1.2 mi (2 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 Highway 101 over Petaluma River built?
It was built in 2016, making it 9 years old in 2025.
What condition is US Highway 101 over Petaluma River 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 April 2024.
How much traffic does US Highway 101 over Petaluma River carry?
About 76,000 vehicles per day (2014 count), of which roughly 6% are trucks.
How long is US Highway 101 over Petaluma River?
The structure is 907 ft (276.5 m) long with a longest span of 213 ft (64.8 m) and a deck 117 ft wide.
Who owns US Highway 101 over Petaluma River?
It is owned by the State Highway Agency.