IRR County Road over Antelope Ck
GoodTodd County, South Dakota · 1.7S 5.0E Mission · Structure no. 000000061350076
- Built
- 1994
- 31 years old
- Condition
- Good
- inspected August 2021
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 27
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
IRR County Road over Antelope Ck is a concrete continuous culvert carrying IRR County Road over Antelope Ck in Todd County, South Dakota. It was built in 1994, so it is 31 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 27 vehicles a day, roughly 3% of them trucks, projected to reach 27 by 2032. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR County Road over Antelope Ck built?
It was built in 1994, making it 31 years old in 2025.
What condition is IRR County Road over Antelope Ck in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2021.
How much traffic does IRR County Road over Antelope Ck carry?
About 27 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is IRR County Road over Antelope Ck?
The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).
Who owns IRR County Road over Antelope Ck?
It is owned by the County Highway Agency.