486th Avenue over Ck
PoorPosted for loadBrookings County, South Dakota · 3.2N & 8E Bushnell · Structure no. 000000006320118
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected September 2023
- Type
- Channel Beam
- Concrete
- Length
- 74 ft
- 2 main spans
- Daily traffic
- 175
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
486th Avenue over Ck is a concrete channel beam carrying 486th Avenue over Ck in Brookings 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 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. Its operating status is: posted for load restriction.
It carries about 175 vehicles a day, roughly 3% of them trucks, projected to reach 175 by 2032. The structure is 74 ft (22.5 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 486th Avenue over Ck built?
It was built in 1961, making it 64 years old in 2025.
What condition is 486th Avenue 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 September 2023.
How much traffic does 486th Avenue over Ck carry?
About 175 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 486th Avenue over Ck?
The structure is 74 ft (22.5 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.
Who owns 486th Avenue over Ck?
It is owned by the County Highway Agency.