480 Avenue over North Fork Yellow Bank R
FairGrant County, South Dakota · 3.5S & 2E Milbank · Structure no. 000000026310105
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 52 ft
- 1 main span
- Daily traffic
- 35
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
480 Avenue over North Fork Yellow Bank R is a steel stringer/multi-beam or girder carrying 480 Avenue over North Fork Yellow Bank R 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 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 52 ft (15.8 m) long and 28 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 480 Avenue over North Fork Yellow Bank R built?
It was built in 1966, making it 59 years old in 2025.
What condition is 480 Avenue over North Fork Yellow Bank R 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 480 Avenue over North Fork Yellow Bank R carry?
About 35 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 480 Avenue over North Fork Yellow Bank R?
The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.
Who owns 480 Avenue over North Fork Yellow Bank R?
It is owned by the County Highway Agency.