406th Avenue over Unnamed Creek
FairBeadle County, South Dakota · 5W & 2.8N Yale · Structure no. 000000003300108
- Built
- 1932
- 93 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 29
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
406th Avenue over Unnamed Creek is a concrete continuous slab carrying 406th Avenue over Unnamed Creek in Beadle County, South Dakota. It was built in 1932, so it is 93 years old, older 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 29 vehicles a day, roughly 3% of them trucks, projected to reach 29 by 2032. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 406th Avenue over Unnamed Creek built?
It was built in 1932, making it 93 years old in 2025.
What condition is 406th Avenue over Unnamed Creek 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 September 2024.
How much traffic does 406th Avenue over Unnamed Creek carry?
About 29 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 406th Avenue over Unnamed Creek?
The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 22 ft wide.
Who owns 406th Avenue over Unnamed Creek?
It is owned by the County Highway Agency.