I029 N over 471 Ave
FairDeuel County, South Dakota · 3.5 NW Sd 28 Interch · Structure no. 000000020050248
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 157 ft
- 3 main spans
- Daily traffic
- 4,870
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I029 N over 471 Ave is a steel continuous stringer/multi-beam or girder carrying I029 N over 471 Ave in Deuel 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 4,870 vehicles a day, roughly 32% of them trucks, projected to reach 7,324 by 2044. The structure is 157 ft (47.9 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I029 N over 471 Ave built?
It was built in 1973, making it 52 years old in 2025.
What condition is I029 N over 471 Ave 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 July 2023.
How much traffic does I029 N over 471 Ave carry?
About 4,870 vehicles per day (2024 count), of which roughly 32% are trucks.
How long is I029 N over 471 Ave?
The structure is 157 ft (47.9 m) long with a longest span of 57 ft (17.4 m) and a deck 41 ft wide.
Who owns I029 N over 471 Ave?
It is owned by the State Highway Agency.