SH 21 over Crooked Creek
FairCuster County, Idaho · 3.1 W. Stanley · Structure no. 000000000012965
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected July 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 2,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 21 over Crooked Creek is a concrete culvert carrying SH 21 over Crooked Creek in Custer County, Idaho. It was built in 1968, so it is 57 years old, older than the Idaho average of 45.3 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 2,200 vehicles a day, roughly 4% of them trucks, projected to reach 3,300 by 2042. The structure is 21 ft (6.4 m) long and 40 ft wide. If it were closed, the detour would be 98.8 mi (159 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 21 over Crooked Creek built?
It was built in 1968, making it 57 years old in 2025.
What condition is SH 21 over Crooked 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 July 2024.
How much traffic does SH 21 over Crooked Creek carry?
About 2,200 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is SH 21 over Crooked Creek?
The structure is 21 ft (6.4 m) long with a longest span of 11 ft (3.4 m) and a deck 40 ft wide.
Who owns SH 21 over Crooked Creek?
It is owned by the State Highway Agency.