428 Ave over Ck
PoorMiner County, South Dakota · 6W & 4.3N Howard · Structure no. 000000049100087
- Built
- 1940
- 85 years old
- Condition
- Poor
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 26 ft
- 2 main spans
- Daily traffic
- 61
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
428 Ave over Ck is a concrete continuous slab carrying 428 Ave over Ck in Miner County, South Dakota. It was built in 1940, so it is 85 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 61 vehicles a day, roughly 2% of them trucks, projected to reach 93 by 2032. The structure is 26 ft (7.9 m) long and 29 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 428 Ave over Ck built?
It was built in 1940, making it 85 years old in 2025.
What condition is 428 Ave over Ck in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does 428 Ave over Ck carry?
About 61 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 428 Ave over Ck?
The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.
Who owns 428 Ave over Ck?
It is owned by the County Highway Agency.