I029 S over Willow Ck
FairCodington County, South Dakota · 1.7 N US 212 Interch · Structure no. 000000015214163
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 223 ft
- 3 main spans
- Daily traffic
- 4,225
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I029 S over Willow Ck is a steel continuous stringer/multi-beam or girder carrying I029 S over Willow Ck in Codington County, South Dakota. It was built in 1973, so it is 52 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 6 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 4,225 vehicles a day, roughly 27% of them trucks, projected to reach 6,430 by 2044. The structure is 223 ft (68 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I029 S over Willow Ck built?
It was built in 1973, making it 52 years old in 2025.
What condition is I029 S over 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 April 2023.
How much traffic does I029 S over Willow Ck carry?
About 4,225 vehicles per day (2024 count), of which roughly 27% are trucks.
How long is I029 S over Willow Ck?
The structure is 223 ft (68 m) long with a longest span of 85 ft (25.9 m) and a deck 41 ft wide.
Who owns I029 S over Willow Ck?
It is owned by the State Highway Agency.