300 ST over I029
GoodUnion County, South Dakota · 3 S Sd 46 Interch · Structure no. 000000064006030
- Built
- 2024
- 1 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 244 ft
- 2 main spans
- Daily traffic
- 115
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
300 ST over I029 is a prestressed concrete stringer/multi-beam or girder carrying 300 ST over I029 in Union County, South Dakota. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 115 vehicles a day, roughly 2% of them trucks, projected to reach 115 by 2043. The structure is 244 ft (74.4 m) long and 35 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 300 ST over I029 built?
It was built in 2024, making it 1 years old in 2025.
What condition is 300 ST 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 November 2024.
How much traffic does 300 ST over I029 carry?
About 115 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is 300 ST over I029?
The structure is 244 ft (74.4 m) long with a longest span of 121 ft (36.9 m) and a deck 35 ft wide.
Who owns 300 ST over I029?
It is owned by the State Highway Agency.