SD011 over West Union Ck
FairUnion County, South Dakota · 12.4 S JCT Sd 46 · Structure no. 000000064090124
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 406
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD011 over West Union Ck is a concrete continuous slab carrying SD011 over West Union Ck in Union County, South Dakota. It was built in 1969, so it is 56 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 406 vehicles a day, roughly 23% of them trucks, projected to reach 625 by 2044. The structure is 120 ft (36.5 m) long and 39 ft wide. If it were closed, the detour would be 18 mi (29 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 SD011 over West Union Ck built?
It was built in 1969, making it 56 years old in 2025.
What condition is SD011 over West Union 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 SD011 over West Union Ck carry?
About 406 vehicles per day (2024 count), of which roughly 23% are trucks.
How long is SD011 over West Union Ck?
The structure is 120 ft (36.5 m) long with a longest span of 43 ft (13.1 m) and a deck 39 ft wide.
Who owns SD011 over West Union Ck?
It is owned by the State Highway Agency.