SD089 over Ck Mickelson Trail
FairCuster County, South Dakota · 6.8 N Fall River CO Line · Structure no. 000000017206211
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 207 ft
- 3 main spans
- Daily traffic
- 1,218
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD089 over Ck Mickelson Trail is a steel continuous stringer/multi-beam or girder carrying SD089 over Ck Mickelson Trail in Custer County, South Dakota. It was built in 1970, so it is 55 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 1,218 vehicles a day, roughly 9% of them trucks, projected to reach 1,987 by 2044. The structure is 207 ft (63 m) long and 39 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD089 over Ck Mickelson Trail built?
It was built in 1970, making it 55 years old in 2025.
What condition is SD089 over Ck Mickelson Trail 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 2023.
How much traffic does SD089 over Ck Mickelson Trail carry?
About 1,218 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is SD089 over Ck Mickelson Trail?
The structure is 207 ft (63 m) long with a longest span of 80 ft (24.4 m) and a deck 39 ft wide.
Who owns SD089 over Ck Mickelson Trail?
It is owned by the State Highway Agency.