IRR US018 over Trib. to White Clay Ck
GoodCounty 102, South Dakota · 7.1 NW Pine Ridge · Structure no. 000000057193418
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected August 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 2,131
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR US018 over Trib. to White Clay Ck is a concrete continuous culvert carrying IRR US018 over Trib. to White Clay Ck in County 102, South Dakota. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,131 vehicles a day, roughly 5% of them trucks, projected to reach 2,836 by 2044. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 39.8 mi (64 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 | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR US018 over Trib. to White Clay Ck built?
It was built in 2011, making it 14 years old in 2025.
What condition is IRR US018 over Trib. to White Clay 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 2023.
How much traffic does IRR US018 over Trib. to White Clay Ck carry?
About 2,131 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is IRR US018 over Trib. to White Clay Ck?
The structure is 23 ft (6.9 m) long with a longest span of 11 ft (3.4 m).
Who owns IRR US018 over Trib. to White Clay Ck?
It is owned by the State Highway Agency.