State Route 70 over North Fork Feather River
FairPlumas County, California · 02-PLU-070-3.07 · Structure no. 09 0002
- Built
- 1936
- 89 years old
- Condition
- Fair
- inspected June 2023
- Type
- Truss - Thru
- Steel
- Length
- 331 ft
- 1 main span
- Daily traffic
- 1,345
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 70 over North Fork Feather River is a steel truss - thru carrying State Route 70 over North Fork Feather River in Plumas County, California. It was built in 1936, so it is 89 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 6 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 1,345 vehicles a day, roughly 14% of them trucks, projected to reach 1,530 by 2040. The structure is 331 ft (100.9 m) long and 27 ft wide. If it were closed, the detour would be 41 mi (66 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 70 over North Fork Feather River built?
It was built in 1936, making it 89 years old in 2025.
What condition is State Route 70 over North Fork Feather 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 2023.
How much traffic does State Route 70 over North Fork Feather River carry?
About 1,345 vehicles per day (2009 count), of which roughly 14% are trucks.
How long is State Route 70 over North Fork Feather River?
The structure is 331 ft (100.9 m) long with a longest span of 183 ft (55.8 m) and a deck 27 ft wide.
Who owns State Route 70 over North Fork Feather River?
It is owned by the State Highway Agency.