SD079 over North Willow Ck
FairButte County, South Dakota · 4.9 S JCT Sd 168 · Structure no. 000000010310215
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 185 ft
- 3 main spans
- Daily traffic
- 581
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD079 over North Willow Ck is a steel continuous stringer/multi-beam or girder carrying SD079 over North Willow Ck in Butte County, South Dakota. It was built in 1968, so it is 57 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 581 vehicles a day, roughly 14% of them trucks, projected to reach 834 by 2044. The structure is 185 ft (56.3 m) long and 35 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD079 over North Willow Ck built?
It was built in 1968, making it 57 years old in 2025.
What condition is SD079 over North Willow 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 December 2023.
How much traffic does SD079 over North Willow Ck carry?
About 581 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is SD079 over North Willow Ck?
The structure is 185 ft (56.3 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.
Who owns SD079 over North Willow Ck?
It is owned by the State Highway Agency.