SD047 over Swan Lake Ck
GoodWalworth County, South Dakota · 3.9 N JCT Sd 20 · Structure no. 000000065330201
- Built
- 2023
- 2 years old
- Condition
- Good
- inspected September 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 52 ft
- 4 main spans
- Daily traffic
- 394
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD047 over Swan Lake Ck is a concrete continuous culvert carrying SD047 over Swan Lake Ck in Walworth County, South Dakota. It was built in 2023, so it is 2 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 394 vehicles a day, roughly 22% of them trucks, projected to reach 622 by 2044. The structure is 52 ft (15.9 m) long and 36 ft wide. If it were closed, the detour would be 26.1 mi (42 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 9 Excellent | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD047 over Swan Lake Ck built?
It was built in 2023, making it 2 years old in 2025.
What condition is SD047 over Swan Lake Ck in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does SD047 over Swan Lake Ck carry?
About 394 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is SD047 over Swan Lake Ck?
The structure is 52 ft (15.9 m) long with a longest span of 12 ft (3.8 m) and a deck 36 ft wide.
Who owns SD047 over Swan Lake Ck?
It is owned by the State Highway Agency.