446th Avenue over Little Vermillion River
FairMcCook County, South Dakota · 2.5N & 5E of Salem · Structure no. 000000044160060
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected June 2024
- Type
- Channel Beam
- Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 35
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
446th Avenue over Little Vermillion River is a concrete channel beam carrying 446th Avenue over Little Vermillion River in McCook County, South Dakota. It was built in 1961, so it is 64 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 5 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 36 ft (11 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 446th Avenue over Little Vermillion River built?
It was built in 1961, making it 64 years old in 2025.
What condition is 446th Avenue over Little Vermillion River 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 June 2024.
How much traffic does 446th Avenue over Little Vermillion River carry?
About 35 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 446th Avenue over Little Vermillion River?
The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 26 ft wide.
Who owns 446th Avenue over Little Vermillion River?
It is owned by the County Highway Agency.