Benson Road over Big Sioux Diversion
GoodMinnehaha County, South Dakota · East of Minnesota Avenue · Structure no. 000000050202180
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 453 ft
- 6 main spans
- Daily traffic
- 9,273
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Benson Road over Big Sioux Diversion is a prestressed concrete continuous stringer/multi-beam or girder carrying Benson Road over Big Sioux Diversion in Minnehaha County, South Dakota. It was built in 1999, so it is 26 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 9,273 vehicles a day, roughly 4% of them trucks, projected to reach 10,254 by 2032. The structure is 453 ft (138.1 m) long and 55 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 Benson Road over Big Sioux Diversion built?
It was built in 1999, making it 26 years old in 2025.
What condition is Benson Road over Big Sioux Diversion 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 Benson Road over Big Sioux Diversion carry?
About 9,273 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is Benson Road over Big Sioux Diversion?
The structure is 453 ft (138.1 m) long with a longest span of 77 ft (23.4 m) and a deck 55 ft wide.
Who owns Benson Road over Big Sioux Diversion?
It is owned by the City or Municipal Highway Agency.