RD 305 over Susan River Overflow #8
FairLassen County, California · 1.6 MI South of US 395 · Structure no. 07C0046
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 32 ft
- 1 main span
- Daily traffic
- 200
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
RD 305 over Susan River Overflow #8 is a steel stringer/multi-beam or girder carrying RD 305 over Susan River Overflow #8 in Lassen County, California. It was built in 1971, so it is 54 years old, younger 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 200 vehicles a day, roughly 9% of them trucks, projected to reach 266 by 2042. The structure is 32 ft (9.9 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was RD 305 over Susan River Overflow #8 built?
It was built in 1971, making it 54 years old in 2025.
What condition is RD 305 over Susan River Overflow #8 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 August 2024.
How much traffic does RD 305 over Susan River Overflow #8 carry?
About 200 vehicles per day (2017 count), of which roughly 9% are trucks.
How long is RD 305 over Susan River Overflow #8?
The structure is 32 ft (9.9 m) long with a longest span of 31 ft (9.6 m) and a deck 24 ft wide.
Who owns RD 305 over Susan River Overflow #8?
It is owned by the County Highway Agency.