Diamond Mountan RD over E Branch Lights Creek
FairPlumas County, California · 12.6 MI NE Grnvle-Bkwt RD · Structure no. 09C0069
- Built
- 1954
- 71 years old, rebuilt 1982
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 30 ft
- 1 main span
- Daily traffic
- 80
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Diamond Mountan RD over E Branch Lights Creek is a steel stringer/multi-beam or girder carrying Diamond Mountan RD over E Branch Lights Creek in Plumas County, California. It was built in 1954 and reconstructed in 1982, so it is 71 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 80 vehicles a day, roughly 7% of them trucks, projected to reach 147 by 2044. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 32.9 mi (53 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Diamond Mountan RD over E Branch Lights Creek built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1982.
What condition is Diamond Mountan RD over E Branch Lights Creek 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 September 2023.
How much traffic does Diamond Mountan RD over E Branch Lights Creek carry?
About 80 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is Diamond Mountan RD over E Branch Lights Creek?
The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.
Who owns Diamond Mountan RD over E Branch Lights Creek?
It is owned by the County Highway Agency.