SD027 over Antelope Ck
FairDay County, South Dakota · 1.2 S Marshall CO Line · Structure no. 000000019070012
- Built
- 1970
- 55 years old, rebuilt 2001
- Condition
- Fair
- inspected June 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 428
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD027 over Antelope Ck is a concrete continuous culvert carrying SD027 over Antelope Ck in Day County, South Dakota. It was built in 1970 and reconstructed in 2001, so it is 55 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 428 vehicles a day, roughly 19% of them trucks, projected to reach 663 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 24.9 mi (40 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 SD027 over Antelope Ck built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2001.
What condition is SD027 over Antelope 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 June 2024.
How much traffic does SD027 over Antelope Ck carry?
About 428 vehicles per day (2024 count), of which roughly 19% are trucks.
How long is SD027 over Antelope Ck?
The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).
Who owns SD027 over Antelope Ck?
It is owned by the State Highway Agency.