47570 311 Str. over Ck
PoorPosted for loadUnion County, South Dakota · 13S & 3.7E Beresford · Structure no. 000000064057140
- Built
- 1955
- 70 years old, rebuilt 1974
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 51 ft
- 1 main span
- Daily traffic
- 30
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
47570 311 Str. over Ck is a steel stringer/multi-beam or girder carrying 47570 311 Str. over Ck in Union County, South Dakota. It was built in 1955 and reconstructed in 1974, so it is 70 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 30 vehicles a day, roughly 2% of them trucks, projected to reach 30 by 2032. The structure is 51 ft (15.5 m) long and 29 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 47570 311 Str. over Ck built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1974.
What condition is 47570 311 Str. over Ck in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does 47570 311 Str. over Ck carry?
About 30 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 47570 311 Str. over Ck?
The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 29 ft wide.
Who owns 47570 311 Str. over Ck?
It is owned by the County Highway Agency.