IRR US018 over Trib to Lake Andes
GoodCharles Mix County, South Dakota · 1.0 E JCT Sd 50 W · Structure no. 000000012394244
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected September 2021
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 1,298
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR US018 over Trib to Lake Andes is a concrete continuous culvert carrying IRR US018 over Trib to Lake Andes in Charles Mix County, South Dakota. It was built in 2005, so it is 20 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 1,298 vehicles a day, roughly 7% of them trucks, projected to reach 1,873 by 2044. The structure is 21 ft (6.5 m) long. If it were closed, the detour would be 1.9 mi (3 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 Lake Andes built?
It was built in 2005, making it 20 years old in 2025.
What condition is IRR US018 over Trib to Lake Andes 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 September 2021.
How much traffic does IRR US018 over Trib to Lake Andes carry?
About 1,298 vehicles per day (2024 count), of which roughly 7% are trucks.
How long is IRR US018 over Trib to Lake Andes?
The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3.2 m).
Who owns IRR US018 over Trib to Lake Andes?
It is owned by the State Highway Agency.