State Route 20 over James Creek
GoodMendocino County, California · 01-MEN-020-20.00 · Structure no. 10 0102
- Built
- 1962
- 63 years old
- Condition
- Good
- inspected May 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 240 ft
- 4 main spans
- Daily traffic
- 2,600
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 20 over James Creek is a concrete continuous tee beam carrying State Route 20 over James Creek in Mendocino County, California. It was built in 1962, so it is 63 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 2,600 vehicles a day, roughly 16% of them trucks, projected to reach 4,684 by 2045. The structure is 240 ft (73.2 m) long and 34 ft wide. If it were closed, the detour would be 67.1 mi (108 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 20 over James Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is State Route 20 over James 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 May 2023.
How much traffic does State Route 20 over James Creek carry?
About 2,600 vehicles per day (2009 count), of which roughly 16% are trucks.
How long is State Route 20 over James Creek?
The structure is 240 ft (73.2 m) long with a longest span of 65 ft (19.8 m) and a deck 34 ft wide.
Who owns State Route 20 over James Creek?
It is owned by the State Highway Agency.