479 Avenue over Ck
FairGrant County, South Dakota · 1E & 2.3N Milbank · Structure no. 000000026300047
- Built
- 1996
- 29 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 41 ft
- 1 main span
- Daily traffic
- 52
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
479 Avenue over Ck is a prestressed concrete tee beam carrying 479 Avenue over Ck in Grant County, South Dakota. It was built in 1996, so it is 29 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 52 vehicles a day, roughly 2% of them trucks, projected to reach 52 by 2032. The structure is 41 ft (12.4 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 479 Avenue over Ck built?
It was built in 1996, making it 29 years old in 2025.
What condition is 479 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 2024.
How much traffic does 479 Avenue over Ck carry?
About 52 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 479 Avenue over Ck?
The structure is 41 ft (12.4 m) long with a longest span of 40 ft (12.2 m) and a deck 23 ft wide.
Who owns 479 Avenue over Ck?
It is owned by the County Highway Agency.