SD471 over Cottonwood Ck
GoodFall River County, South Dakota · 1.3 S of Edgemont · Structure no. 000000024116133
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 130 ft
- 1 main span
- Daily traffic
- 198
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD471 over Cottonwood Ck is a prestressed concrete stringer/multi-beam or girder carrying SD471 over Cottonwood Ck in Fall River County, South Dakota. It was built in 2015, so it is 10 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 198 vehicles a day, roughly 8% of them trucks, projected to reach 294 by 2044. The structure is 130 ft (39.6 m) long and 35 ft wide. If it were closed, the detour would be 34.2 mi (55 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 SD471 over Cottonwood Ck built?
It was built in 2015, making it 10 years old in 2025.
What condition is SD471 over Cottonwood Ck 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 2023.
How much traffic does SD471 over Cottonwood Ck carry?
About 198 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is SD471 over Cottonwood Ck?
The structure is 130 ft (39.6 m) long with a longest span of 126 ft (38.4 m) and a deck 35 ft wide.
Who owns SD471 over Cottonwood Ck?
It is owned by the State Highway Agency.