479th Avenue over Ck
PoorPosted for loadBrookings County, South Dakota · 1.6N & 1E White · Structure no. 000000006250059
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected September 2023
- Type
- Truss - Thru
- Steel
- Length
- 51 ft
- 1 main span
- Daily traffic
- 92
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
479th Avenue over Ck is a steel truss - thru carrying 479th Avenue over Ck in Brookings County, South Dakota. It was built in 1920, so it is 105 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 92 vehicles a day, roughly 2% of them trucks, projected to reach 92 by 2032. The structure is 51 ft (15.5 m) long and 16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 479th Avenue over Ck built?
It was built in 1920, making it 105 years old in 2025.
What condition is 479th 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 479th Avenue over Ck carry?
About 92 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 479th Avenue over Ck?
The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.2 m) and a deck 16 ft wide.
Who owns 479th Avenue over Ck?
It is owned by the County Highway Agency.