US Highway 101 over Lynch Creek
GoodSonoma County, California · 04-SON-101-5.19-PET · Structure no. 20 0162
- Built
- 1955
- 70 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 79 ft
- 3 main spans
- Daily traffic
- 43,000
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 over Lynch Creek is a concrete continuous slab carrying US Highway 101 over Lynch Creek in Sonoma County, California. It was built in 1955, so it is 70 years old, older 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 43,000 vehicles a day, roughly 8% of them trucks, projected to reach 68,443 by 2046. The structure is 79 ft (24.1 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 over Lynch Creek built?
It was built in 1955, making it 70 years old in 2025.
What condition is US Highway 101 over Lynch 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 Highway 101 over Lynch Creek carry?
About 43,000 vehicles per day (2016 count), of which roughly 8% are trucks.
How long is US Highway 101 over Lynch Creek?
The structure is 79 ft (24.1 m) long with a longest span of 30 ft (9.1 m) and a deck 117 ft wide.
Who owns US Highway 101 over Lynch Creek?
It is owned by the State Highway Agency.