Arnold DR over Sonoma CR (glen Ellen)
GoodSonoma County, California · London Ranch RD · Structure no. 20C0012
- Built
- 1939
- 86 years old
- Condition
- Good
- inspected April 2024
- Type
- Tee Beam
- Concrete
- Length
- 150 ft
- 2 main spans
- Daily traffic
- 6,300
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Arnold DR over Sonoma CR (glen Ellen) is a concrete tee beam carrying Arnold DR over Sonoma CR (glen Ellen) in Sonoma County, California. It was built in 1939, so it is 86 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 6,300 vehicles a day, roughly 5% of them trucks, projected to reach 7,017 by 2046. The structure is 150 ft (45.7 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Arnold DR over Sonoma CR (glen Ellen) built?
It was built in 1939, making it 86 years old in 2025.
What condition is Arnold DR over Sonoma CR (glen Ellen) 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 Arnold DR over Sonoma CR (glen Ellen) carry?
About 6,300 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Arnold DR over Sonoma CR (glen Ellen)?
The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.
Who owns Arnold DR over Sonoma CR (glen Ellen)?
It is owned by the County Highway Agency.