IRR SD047 over Soldier Ck
FairBuffalo County, South Dakota · 0.3 NE Big Bend Dam · Structure no. 000000009060089
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected April 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 227 ft
- 2 main spans
- Daily traffic
- 917
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD047 over Soldier Ck is a steel girder and floorbeam system carrying IRR SD047 over Soldier Ck in Buffalo County, South Dakota. It was built in 1963, so it is 62 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 5 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 917 vehicles a day, roughly 10% of them trucks, projected to reach 1,407 by 2044. The structure is 227 ft (69.3 m) long and 37 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR SD047 over Soldier Ck built?
It was built in 1963, making it 62 years old in 2025.
What condition is IRR SD047 over Soldier 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 April 2024.
How much traffic does IRR SD047 over Soldier Ck carry?
About 917 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is IRR SD047 over Soldier Ck?
The structure is 227 ft (69.3 m) long with a longest span of 110 ft (33.5 m) and a deck 37 ft wide.
Who owns IRR SD047 over Soldier Ck?
It is owned by the State Highway Agency.