IRR SD050 over Dry Choteau Ck
FairBon Homme County, South Dakota · 2.1 W of Avon · Structure no. 000000005029110
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 94 ft
- 5 main spans
- Daily traffic
- 1,280
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD050 over Dry Choteau Ck is a concrete continuous slab carrying IRR SD050 over Dry Choteau Ck in Bon Homme County, South Dakota. It was built in 1960, so it is 65 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 1,280 vehicles a day, roughly 16% of them trucks, projected to reach 1,847 by 2044. The structure is 94 ft (28.7 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| 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 Dry Choteau Ck built?
It was built in 1960, making it 65 years old in 2025.
What condition is IRR SD050 over Dry Choteau 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 August 2024.
How much traffic does IRR SD050 over Dry Choteau Ck carry?
About 1,280 vehicles per day (2024 count), of which roughly 16% are trucks.
How long is IRR SD050 over Dry Choteau Ck?
The structure is 94 ft (28.7 m) long with a longest span of 18 ft (5.6 m) and a deck 34 ft wide.
Who owns IRR SD050 over Dry Choteau Ck?
It is owned by the State Highway Agency.