I029 N over W 12th ST
FairMinnehaha County, South Dakota · 12th ST Interchange · Structure no. 000000050176210
- Built
- 2006
- 19 years old
- Condition
- Fair
- inspected October 2022
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 374 ft
- 3 main spans
- Daily traffic
- 32,455
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I029 N over W 12th ST is a steel continuous stringer/multi-beam or girder carrying I029 N over W 12th ST in Minnehaha County, South Dakota. It was built in 2006, so it is 19 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 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 32,455 vehicles a day, roughly 11% of them trucks, projected to reach 51,149 by 2044. The structure is 374 ft (114 m) long and 59 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I029 N over W 12th ST built?
It was built in 2006, making it 19 years old in 2025.
What condition is I029 N over W 12th ST 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 October 2022.
How much traffic does I029 N over W 12th ST carry?
About 32,455 vehicles per day (2024 count), of which roughly 11% are trucks.
How long is I029 N over W 12th ST?
The structure is 374 ft (114 m) long with a longest span of 191 ft (58.2 m) and a deck 59 ft wide.
Who owns I029 N over W 12th ST?
It is owned by the State Highway Agency.