State Route 20 over East Fork Russian River
FairMendocino County, California · 01-MEN-020-36.36 · Structure no. 10 0184
- Built
- 1958
- 67 years old, rebuilt 2000
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 610 ft
- 4 main spans
- Daily traffic
- 11,350
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 20 over East Fork Russian River is a steel stringer/multi-beam or girder carrying State Route 20 over East Fork Russian River in Mendocino County, California. It was built in 1958 and reconstructed in 2000, so it is 67 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 11,350 vehicles a day, roughly 11% of them trucks, projected to reach 23,464 by 2042. The structure is 610 ft (185.9 m) long and 34 ft wide. If it were closed, the detour would be 60.3 mi (97 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 20 over East Fork Russian River built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2000.
What condition is State Route 20 over East Fork Russian River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does State Route 20 over East Fork Russian River carry?
About 11,350 vehicles per day (2009 count), of which roughly 11% are trucks.
How long is State Route 20 over East Fork Russian River?
The structure is 610 ft (185.9 m) long with a longest span of 152 ft (46.3 m) and a deck 34 ft wide.
Who owns State Route 20 over East Fork Russian River?
It is owned by the State Highway Agency.