SD073 over Lake Ck
FairBennett County, South Dakota · 6.3 S JCT US 18 · Structure no. 000000004197215
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 145 ft
- 3 main spans
- Daily traffic
- 522
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD073 over Lake Ck is a steel continuous stringer/multi-beam or girder carrying SD073 over Lake Ck in Bennett County, South Dakota. It was built in 1964, so it is 61 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 522 vehicles a day, roughly 21% of them trucks, projected to reach 784 by 2044. The structure is 145 ft (44.2 m) long and 32 ft wide. If it were closed, the detour would be 57.2 mi (92 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 SD073 over Lake Ck built?
It was built in 1964, making it 61 years old in 2025.
What condition is SD073 over Lake 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 March 2024.
How much traffic does SD073 over Lake Ck carry?
About 522 vehicles per day (2024 count), of which roughly 21% are trucks.
How long is SD073 over Lake Ck?
The structure is 145 ft (44.2 m) long with a longest span of 55 ft (16.8 m) and a deck 32 ft wide.
Who owns SD073 over Lake Ck?
It is owned by the State Highway Agency.