IRR SD013 over Big Sioux Rv
FairMoody County, South Dakota · 2.0 N of Flandreau · Structure no. 000000051150082
- Built
- 1964
- 61 years old, rebuilt 1999
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 295 ft
- 4 main spans
- Daily traffic
- 1,073
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD013 over Big Sioux Rv is a steel continuous stringer/multi-beam or girder carrying IRR SD013 over Big Sioux Rv in Moody County, South Dakota. It was built in 1964 and reconstructed in 1999, so it is 61 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 1,073 vehicles a day, roughly 11% of them trucks, projected to reach 1,367 by 2044. The structure is 295 ft (89.9 m) long and 35 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 SD013 over Big Sioux Rv built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1999.
What condition is IRR SD013 over Big Sioux Rv 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 December 2023.
How much traffic does IRR SD013 over Big Sioux Rv carry?
About 1,073 vehicles per day (2024 count), of which roughly 11% are trucks.
How long is IRR SD013 over Big Sioux Rv?
The structure is 295 ft (89.9 m) long with a longest span of 90 ft (27.4 m) and a deck 35 ft wide.
Who owns IRR SD013 over Big Sioux Rv?
It is owned by the State Highway Agency.