US085 over Crow Ck
FairButte County, South Dakota · 2 N of Belle Fourche · Structure no. 000000010100347
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 140 ft
- 5 main spans
- Daily traffic
- 1,543
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US085 over Crow Ck is a concrete continuous slab carrying US085 over Crow Ck in Butte County, South Dakota. It was built in 1966, so it is 59 years old, older than the South Dakota average of 48.9 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 1,543 vehicles a day, roughly 14% of them trucks, projected to reach 2,214 by 2044. The structure is 140 ft (42.7 m) long and 43 ft wide. If it were closed, the detour would be 19.3 mi (31 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US085 over Crow Ck built?
It was built in 1966, making it 59 years old in 2025.
What condition is US085 over Crow Ck 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 March 2024.
How much traffic does US085 over Crow Ck carry?
About 1,543 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is US085 over Crow Ck?
The structure is 140 ft (42.7 m) long with a longest span of 28 ft (8.5 m) and a deck 43 ft wide.
Who owns US085 over Crow Ck?
It is owned by the State Highway Agency.