485th Avenue over Beaver Creek
FairMinnehaha County, South Dakota · 2W & 1.6S Valley Springs · Structure no. 000000050310196
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 129 ft
- 5 main spans
- Daily traffic
- 52
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
485th Avenue over Beaver Creek is a concrete continuous slab carrying 485th Avenue over Beaver Creek in Minnehaha County, South Dakota. It was built in 1970, so it is 55 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 52 vehicles a day, roughly 2% of them trucks, projected to reach 60 by 2037. The structure is 129 ft (39.2 m) long and 34 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 | 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 | 7 Good | Some minor problems. |
| 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 485th Avenue over Beaver Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is 485th Avenue over Beaver Creek 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 June 2024.
How much traffic does 485th Avenue over Beaver Creek carry?
About 52 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 485th Avenue over Beaver Creek?
The structure is 129 ft (39.2 m) long with a longest span of 28 ft (8.4 m) and a deck 34 ft wide.
Who owns 485th Avenue over Beaver Creek?
It is owned by the County Highway Agency.