SD123 over Ck
FairGrant County, South Dakota · 0.8 S Roberts CO Line · Structure no. 000000026180008
- Built
- 1988
- 37 years old
- Condition
- Fair
- inspected July 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 280
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD123 over Ck is a concrete continuous culvert carrying SD123 over Ck in Grant County, South Dakota. It was built in 1988, so it is 37 years old, younger 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 280 vehicles a day, roughly 14% of them trucks, projected to reach 382 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 14.9 mi (24 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD123 over Ck built?
It was built in 1988, making it 37 years old in 2025.
What condition is SD123 over 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 July 2024.
How much traffic does SD123 over Ck carry?
About 280 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is SD123 over Ck?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3.1 m).
Who owns SD123 over Ck?
It is owned by the State Highway Agency.