I029 S over Big Sioux Rv
GoodUnion County, South Dakota · At Iowa State Line · Structure no. 000000064164405
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 557 ft
- 3 main spans
- Daily traffic
- 18,090
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I029 S over Big Sioux Rv is a steel continuous stringer/multi-beam or girder carrying I029 S over Big Sioux Rv in Union County, South Dakota. It was built in 1990, so it is 35 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 18,090 vehicles a day, roughly 17% of them trucks, projected to reach 25,453 by 2044. The structure is 557 ft (169.8 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I029 S over Big Sioux Rv built?
It was built in 1990, making it 35 years old in 2025.
What condition is I029 S over Big Sioux Rv 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 April 2023.
How much traffic does I029 S over Big Sioux Rv carry?
About 18,090 vehicles per day (2024 count), of which roughly 17% are trucks.
How long is I029 S over Big Sioux Rv?
The structure is 557 ft (169.8 m) long with a longest span of 225 ft (68.6 m) and a deck 43 ft wide.
Who owns I029 S over Big Sioux Rv?
It is owned by the State Highway Agency.