Road 24N28 over Slate Creek
PoorPosted for loadPlumas County, California · Slate Creek · Structure no. 051156000001028
- Built
- 1956
- 69 years old, rebuilt 1987
- Condition
- Poor
- inspected September 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 49 ft
- 1 main span
- Daily traffic
- 50
- Owner
- Federal
- U.S. Forest Service
About this bridge
Road 24N28 over Slate Creek is a steel girder and floorbeam system carrying Road 24N28 over Slate Creek in Plumas County, California. It was built in 1956 and reconstructed in 1987, so it is 69 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 49 ft (14.9 m) long and 14 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| 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 Road 24N28 over Slate Creek built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1987.
What condition is Road 24N28 over Slate Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does Road 24N28 over Slate Creek carry?
About 50 vehicles per day (latest count).
How long is Road 24N28 over Slate Creek?
The structure is 49 ft (14.9 m) long with a longest span of 47 ft (14.3 m) and a deck 14 ft wide.
Who owns Road 24N28 over Slate Creek?
It is owned by the U.S. Forest Service.