Porter Creek Road over Porter Creek
GoodSonoma County, California · 7.1 MI NE Mark West & 101 · Structure no. 20C0572
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 160 ft
- 1 main span
- Daily traffic
- 7,300
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Porter Creek Road over Porter Creek is a prestressed concrete stringer/multi-beam or girder carrying Porter Creek Road over Porter Creek in Sonoma County, California. It was built in 2014, so it is 11 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 7,300 vehicles a day, roughly 5% of them trucks, projected to reach 6,038 by 2046. The structure is 160 ft (48.8 m) long and 62 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Porter Creek Road over Porter Creek built?
It was built in 2014, making it 11 years old in 2025.
What condition is Porter Creek Road over Porter 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 October 2024.
How much traffic does Porter Creek Road over Porter Creek carry?
About 7,300 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Porter Creek Road over Porter Creek?
The structure is 160 ft (48.8 m) long with a longest span of 157 ft (47.9 m) and a deck 62 ft wide.
Who owns Porter Creek Road over Porter Creek?
It is owned by the County Highway Agency.