SD231 over High Ck
FairPennington County, South Dakota · 0.2 S Meade CO Line · Structure no. 000000052375262
- Built
- 1947
- 78 years old, rebuilt 1999
- Condition
- Fair
- inspected October 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 38 ft
- 3 main spans
- Daily traffic
- 9,071
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD231 over High Ck is a concrete continuous culvert carrying SD231 over High Ck in Pennington County, South Dakota. It was built in 1947 and reconstructed in 1999, so it is 78 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 9,071 vehicles a day, roughly 3% of them trucks, projected to reach 12,473 by 2044. The structure is 38 ft (11.5 m) long. If it were closed, the detour would be 6.2 mi (10 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 SD231 over High Ck built?
It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1999.
What condition is SD231 over High 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 October 2024.
How much traffic does SD231 over High Ck carry?
About 9,071 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is SD231 over High Ck?
The structure is 38 ft (11.5 m) long with a longest span of 12 ft (3.7 m).
Who owns SD231 over High Ck?
It is owned by the State Highway Agency.