IRR SD020 over Lake Kampeska Outlet
FairCodington County, South Dakota · 1.3 SE JCT Sd 139 · Structure no. 000000015156143
- Built
- 1958
- 67 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 186 ft
- 5 main spans
- Daily traffic
- 3,365
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD020 over Lake Kampeska Outlet is a concrete continuous slab carrying IRR SD020 over Lake Kampeska Outlet in Codington County, South Dakota. It was built in 1958, so it is 67 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 3,365 vehicles a day, roughly 9% of them trucks, projected to reach 4,735 by 2044. The structure is 186 ft (56.7 m) long and 65 ft wide. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 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 IRR SD020 over Lake Kampeska Outlet built?
It was built in 1958, making it 67 years old in 2025.
What condition is IRR SD020 over Lake Kampeska Outlet 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 November 2024.
How much traffic does IRR SD020 over Lake Kampeska Outlet carry?
About 3,365 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is IRR SD020 over Lake Kampeska Outlet?
The structure is 186 ft (56.7 m) long with a longest span of 40 ft (12.2 m) and a deck 65 ft wide.
Who owns IRR SD020 over Lake Kampeska Outlet?
It is owned by the State Highway Agency.