SD046 over I029
GoodUnion County, South Dakota · Sd 46 Interchange · Structure no. 000000064006000
- Built
- 2000
- 25 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 237 ft
- 2 main spans
- Daily traffic
- 4,726
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD046 over I029 is a prestressed concrete continuous stringer/multi-beam or girder carrying SD046 over I029 in Union County, South Dakota. It was built in 2000, so it is 25 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 4,726 vehicles a day, roughly 6% of them trucks, projected to reach 7,278 by 2044. The structure is 237 ft (72.2 m) long and 65 ft wide.
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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD046 over I029 built?
It was built in 2000, making it 25 years old in 2025.
What condition is SD046 over I029 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 August 2023.
How much traffic does SD046 over I029 carry?
About 4,726 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is SD046 over I029?
The structure is 237 ft (72.2 m) long with a longest span of 117 ft (35.8 m) and a deck 65 ft wide.
Who owns SD046 over I029?
It is owned by the State Highway Agency.