State Route 20 over Russian River RR Calpell
GoodMendocino County, California · 01-MEN-020-33.62 · Structure no. 10 0310
- Built
- 2024
- 1 years old
- Condition
- Good
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 862 ft
- 7 main spans
- Daily traffic
- 14,400
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 20 over Russian River RR Calpell is a prestressed concrete continuous box beam or girders - multiple carrying State Route 20 over Russian River RR Calpell in Mendocino County, California. It was built in 2024, so it is 1 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 14,400 vehicles a day, roughly 11% of them trucks, projected to reach 18,700 by 2044. The structure is 862 ft (262.7 m) long and 53 ft wide. If it were closed, the detour would be 3.7 mi (6 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 State Route 20 over Russian River RR Calpell built?
It was built in 2024, making it 1 years old in 2025.
What condition is State Route 20 over Russian River RR Calpell 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 June 2024.
How much traffic does State Route 20 over Russian River RR Calpell carry?
About 14,400 vehicles per day (2019 count), of which roughly 11% are trucks.
How long is State Route 20 over Russian River RR Calpell?
The structure is 862 ft (262.7 m) long with a longest span of 145 ft (44.2 m) and a deck 53 ft wide.
Who owns State Route 20 over Russian River RR Calpell?
It is owned by the State Highway Agency.