IRR US012 over Dry Run Ck
FairCorson County, South Dakota · 0.7 W JCT Sd 63 · Structure no. 000000016574090
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 391
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR US012 over Dry Run Ck is a concrete continuous culvert carrying IRR US012 over Dry Run Ck in Corson County, South Dakota. It was built in 1964, so it is 61 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 391 vehicles a day, roughly 32% of them trucks, projected to reach 511 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 72.1 mi (116 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 IRR US012 over Dry Run Ck built?
It was built in 1964, making it 61 years old in 2025.
What condition is IRR US012 over Dry Run 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 May 2023.
How much traffic does IRR US012 over Dry Run Ck carry?
About 391 vehicles per day (2024 count), of which roughly 32% are trucks.
How long is IRR US012 over Dry Run Ck?
The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).
Who owns IRR US012 over Dry Run Ck?
It is owned by the State Highway Agency.