421 Ave over Ck
FairMiner County, South Dakota · 3.5N Fedora · Structure no. 000000049030095
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected August 2024
- Type
- Channel Beam
- Concrete
- Length
- 25 ft
- 1 main span
- Daily traffic
- 85
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
421 Ave over Ck is a concrete channel beam carrying 421 Ave over Ck in Miner County, South Dakota. It was built in 1973, so it is 52 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 85 vehicles a day, roughly 3% of them trucks, projected to reach 85 by 2032. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 421 Ave over Ck built?
It was built in 1973, making it 52 years old in 2025.
What condition is 421 Ave over Ck 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 August 2024.
How much traffic does 421 Ave over Ck carry?
About 85 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 421 Ave over Ck?
The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.
Who owns 421 Ave over Ck?
It is owned by the County Highway Agency.