IRR SD050 over Wolf Ck
FairBuffalo County, South Dakota · 6.1 S JCT Sd 34 · Structure no. 000000009120141
- Built
- 1954
- 71 years old
- Condition
- Fair
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 206 ft
- 3 main spans
- Daily traffic
- 928
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD050 over Wolf Ck is a steel continuous stringer/multi-beam or girder carrying IRR SD050 over Wolf Ck in Buffalo County, South Dakota. It was built in 1954, so it is 71 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 928 vehicles a day, roughly 3% of them trucks, projected to reach 1,424 by 2044. The structure is 206 ft (62.7 m) long and 32 ft wide. If it were closed, the detour would be 21.7 mi (35 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR SD050 over Wolf Ck built?
It was built in 1954, making it 71 years old in 2025.
What condition is IRR SD050 over Wolf 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 February 2025.
How much traffic does IRR SD050 over Wolf Ck carry?
About 928 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is IRR SD050 over Wolf Ck?
The structure is 206 ft (62.7 m) long with a longest span of 79 ft (24.2 m) and a deck 32 ft wide.
Who owns IRR SD050 over Wolf Ck?
It is owned by the State Highway Agency.