475th Avenue over N. Fork Whetstone Rv
PoorPosted for loadRoberts County, South Dakota · 3E & 0.2N of Corona · Structure no. 000000055260408
- Built
- 1967
- 58 years old, rebuilt 2007
- Condition
- Poor
- inspected July 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 33 ft
- 1 main span
- Daily traffic
- 25
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
475th Avenue over N. Fork Whetstone Rv is a prestressed concrete tee beam carrying 475th Avenue over N. Fork Whetstone Rv in Roberts County, South Dakota. It was built in 1967 and reconstructed in 2007, so it is 58 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 25 vehicles a day, roughly 2% of them trucks, projected to reach 25 by 2032. The structure is 33 ft (10.1 m) long and 23 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 | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 475th Avenue over N. Fork Whetstone Rv built?
It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2007.
What condition is 475th Avenue over N. Fork Whetstone Rv 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 July 2024.
How much traffic does 475th Avenue over N. Fork Whetstone Rv carry?
About 25 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 475th Avenue over N. Fork Whetstone Rv?
The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m) and a deck 23 ft wide.
Who owns 475th Avenue over N. Fork Whetstone Rv?
It is owned by the County Highway Agency.