Old Highway 85 over Hay Ck
FairButte County, South Dakota · 6N 14.7W of Hoover · Structure no. 000000010239010
- Built
- 1932
- 93 years old
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 21
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Old Highway 85 over Hay Ck is a concrete culvert carrying Old Highway 85 over Hay Ck in Butte County, South Dakota. It was built in 1932, so it is 93 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 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 21 vehicles a day, roughly 2% of them trucks, projected to reach 30 by 2032. The structure is 21 ft (6.4 m) long and 25 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 | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Highway 85 over Hay Ck built?
It was built in 1932, making it 93 years old in 2025.
What condition is Old Highway 85 over Hay 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 August 2024.
How much traffic does Old Highway 85 over Hay Ck carry?
About 21 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is Old Highway 85 over Hay Ck?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 25 ft wide.
Who owns Old Highway 85 over Hay Ck?
It is owned by the County Highway Agency.