47730 309 Str. over Ck
FairPosted for loadUnion County, South Dakota · 7.5S & 1.7W Alcester · Structure no. 000000064073120
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 33 ft
- 1 main span
- Daily traffic
- 180
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
47730 309 Str. over Ck is a steel stringer/multi-beam or girder carrying 47730 309 Str. over Ck in Union County, South Dakota. It was built in 1977, so it is 48 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. Its operating status is: posted for load restriction.
It carries about 180 vehicles a day, roughly 2% of them trucks, projected to reach 180 by 2032. The structure is 33 ft (10 m) long and 24 ft wide. 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 |
|---|---|---|
| Deck | 9 Excellent | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 47730 309 Str. over Ck built?
It was built in 1977, making it 48 years old in 2025.
What condition is 47730 309 Str. over 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 47730 309 Str. over Ck carry?
About 180 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 47730 309 Str. over Ck?
The structure is 33 ft (10 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.
Who owns 47730 309 Str. over Ck?
It is owned by the County Highway Agency.