IRR I029 over Big Spring Ck
FairRoberts County, South Dakota · 1.2 S Peever Interch · Structure no. 000000055115282
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected July 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 31 ft
- 3 main spans
- Daily traffic
- 5,340
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR I029 over Big Spring Ck is a concrete continuous culvert carrying IRR I029 over Big Spring Ck in Roberts County, South Dakota. It was built in 1978, so it is 47 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 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 5,340 vehicles a day, roughly 22% of them trucks, projected to reach 6,952 by 2043. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 3.1 mi (5 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR I029 over Big Spring Ck built?
It was built in 1978, making it 47 years old in 2025.
What condition is IRR I029 over Big Spring 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 July 2024.
How much traffic does IRR I029 over Big Spring Ck carry?
About 5,340 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is IRR I029 over Big Spring Ck?
The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m).
Who owns IRR I029 over Big Spring Ck?
It is owned by the State Highway Agency.