I029 N over River Drive
GoodUnion County, South Dakota · N Sioux City Interchange · Structure no. 000000064155385
- Built
- 1981
- 44 years old
- Condition
- Good
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 126 ft
- 3 main spans
- Daily traffic
- 9,870
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I029 N over River Drive is a concrete continuous slab carrying I029 N over River Drive in Union County, South Dakota. It was built in 1981, so it is 44 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 9,870 vehicles a day, roughly 23% of them trucks, projected to reach 13,887 by 2044. The structure is 126 ft (38.4 m) long and 43 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 I029 N over River Drive built?
It was built in 1981, making it 44 years old in 2025.
What condition is I029 N over River Drive 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 N over River Drive carry?
About 9,870 vehicles per day (2024 count), of which roughly 23% are trucks.
How long is I029 N over River Drive?
The structure is 126 ft (38.4 m) long with a longest span of 51 ft (15.6 m) and a deck 43 ft wide.
Who owns I029 N over River Drive?
It is owned by the State Highway Agency.