State Route 175 over Russian River
GoodMendocino County, California · 01-MEN-175-0.45 · Structure no. 10 0045
- Built
- 1940
- 85 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 600 ft
- 3 main spans
- Daily traffic
- 4,800
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 175 over Russian River is a steel continuous stringer/multi-beam or girder carrying State Route 175 over Russian River in Mendocino County, California. It was built in 1940, so it is 85 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 4,800 vehicles a day, roughly 7% of them trucks, projected to reach 8,467 by 2043. The structure is 600 ft (182.9 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 175 over Russian River built?
It was built in 1940, making it 85 years old in 2025.
What condition is State Route 175 over Russian 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 May 2023.
How much traffic does State Route 175 over Russian River carry?
About 4,800 vehicles per day (2009 count), of which roughly 7% are trucks.
How long is State Route 175 over Russian River?
The structure is 600 ft (182.9 m) long with a longest span of 108 ft (32.9 m) and a deck 32 ft wide.
Who owns State Route 175 over Russian River?
It is owned by the State Highway Agency.