479 Ave over North Fork Whetstone Rv
FairGrant County, South Dakota · 4.7N & 1.1E Milbank · Structure no. 000000026301024
- Built
- 1993
- 32 years old
- Condition
- Fair
- inspected September 2024
- Type
- Channel Beam
- Concrete
- Length
- 31 ft
- 1 main span
- Daily traffic
- 52
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
479 Ave over North Fork Whetstone Rv is a concrete channel beam carrying 479 Ave over North Fork Whetstone Rv in Grant County, South Dakota. It was built in 1993, so it is 32 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 5 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 3% of them trucks, projected to reach 52 by 2032. The structure is 31 ft (9.4 m) long and 22 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 479 Ave over North Fork Whetstone Rv built?
It was built in 1993, making it 32 years old in 2025.
What condition is 479 Ave over North Fork Whetstone Rv 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 Ave over North Fork Whetstone Rv carry?
About 52 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 479 Ave over North Fork Whetstone Rv?
The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.7 m) and a deck 22 ft wide.
Who owns 479 Ave over North Fork Whetstone Rv?
It is owned by the County Highway Agency.