40260 312th Street over Choteau Creek
FairCharles Mix County, South Dakota · 15.0SE of Greenwood · Structure no. 000000012586442
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 212 ft
- 3 main spans
- Daily traffic
- 50
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
40260 312th Street over Choteau Creek is a steel stringer/multi-beam or girder carrying 40260 312th Street over Choteau Creek in Charles Mix County, South Dakota. It was built in 1974, so it is 51 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 50 vehicles a day, projected to reach 50 by 2042. The structure is 212 ft (64.6 m) long and 35 ft wide. If it were closed, the detour would be 24.2 mi (39 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 40260 312th Street over Choteau Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is 40260 312th Street over Choteau Creek 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 September 2023.
How much traffic does 40260 312th Street over Choteau Creek carry?
About 50 vehicles per day (2022 count).
How long is 40260 312th Street over Choteau Creek?
The structure is 212 ft (64.6 m) long with a longest span of 82 ft (25 m) and a deck 35 ft wide.
Who owns 40260 312th Street over Choteau Creek?
It is owned by the County Highway Agency.