485th Avenue over East Br Deer Ck
FairBrookings County, South Dakota · 5.2N & 7.8E Bushnell · Structure no. 000000006318098
- Built
- 2007
- 18 years old
- Condition
- Fair
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 63
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
485th Avenue over East Br Deer Ck is a prestressed concrete tee beam carrying 485th Avenue over East Br Deer Ck in Brookings County, South Dakota. It was built in 2007, so it is 18 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 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 63 vehicles a day, roughly 3% of them trucks, projected to reach 63 by 2032. The structure is 65 ft (19.8 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 485th Avenue over East Br Deer Ck built?
It was built in 2007, making it 18 years old in 2025.
What condition is 485th Avenue over East Br Deer Ck 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 2023.
How much traffic does 485th Avenue over East Br Deer Ck carry?
About 63 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 485th Avenue over East Br Deer Ck?
The structure is 65 ft (19.8 m) long with a longest span of 65 ft (19.8 m) and a deck 31 ft wide.
Who owns 485th Avenue over East Br Deer Ck?
It is owned by the County Highway Agency.