West 12th Street over Big Sioux River
GoodMinnehaha County, South Dakota · 0.2E of Lyons Avenue - Sf · Structure no. 000000050180210
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 263 ft
- 3 main spans
- Daily traffic
- 40,100
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
West 12th Street over Big Sioux River is a prestressed concrete continuous stringer/multi-beam or girder carrying West 12th Street over Big Sioux River in Minnehaha County, South Dakota. It was built in 1997, so it is 28 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 40,100 vehicles a day, roughly 3% of them trucks, projected to reach 47,132 by 2032. The structure is 263 ft (80.2 m) long and 113 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was West 12th Street over Big Sioux River built?
It was built in 1997, making it 28 years old in 2025.
What condition is West 12th Street over Big Sioux River 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 October 2023.
How much traffic does West 12th Street over Big Sioux River carry?
About 40,100 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is West 12th Street over Big Sioux River?
The structure is 263 ft (80.2 m) long with a longest span of 91 ft (27.7 m) and a deck 113 ft wide.
Who owns West 12th Street over Big Sioux River?
It is owned by the City or Municipal Highway Agency.