145 Street over North Fork Whetstone Rv
FairGrant County, South Dakota · 0.5S & 6.5W Big Stone · Structure no. 000000026309029
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 146 ft
- 3 main spans
- Daily traffic
- 370
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
145 Street over North Fork Whetstone Rv is a steel continuous stringer/multi-beam or girder carrying 145 Street over North Fork Whetstone Rv in Grant County, South Dakota. It was built in 1966, so it is 59 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 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 370 vehicles a day, roughly 37% of them trucks, projected to reach 370 by 2017. The structure is 146 ft (44.5 m) long and 31 ft wide. If it were closed, the detour would be 13 mi (21 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 145 Street over North Fork Whetstone Rv built?
It was built in 1966, making it 59 years old in 2025.
What condition is 145 Street 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 145 Street over North Fork Whetstone Rv carry?
About 370 vehicles per day (2022 count), of which roughly 37% are trucks.
How long is 145 Street over North Fork Whetstone Rv?
The structure is 146 ft (44.5 m) long with a longest span of 55 ft (16.8 m) and a deck 31 ft wide.
Who owns 145 Street over North Fork Whetstone Rv?
It is owned by the County Highway Agency.