485th Avenue over Ck
FairBrookings County, South Dakota · 1.7N & 1W Elkton · Structure no. 000000006310193
- Built
- 1990
- 35 years old
- Condition
- Fair
- inspected September 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 53 ft
- 3 main spans
- Daily traffic
- 92
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
485th Avenue over Ck is a concrete continuous culvert carrying 485th Avenue over Ck in Brookings County, South Dakota. It was built in 1990, so it is 35 years old, younger 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 92 vehicles a day, roughly 2% of them trucks, projected to reach 92 by 2032. The structure is 53 ft (16.1 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 485th Avenue over Ck built?
It was built in 1990, making it 35 years old in 2025.
What condition is 485th Avenue 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 September 2023.
How much traffic does 485th Avenue over Ck carry?
About 92 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 485th Avenue over Ck?
The structure is 53 ft (16.1 m) long with a longest span of 17 ft (5.2 m).
Who owns 485th Avenue over Ck?
It is owned by the County Highway Agency.