487th Avenue over Ck
PoorBrookings County, South Dakota · 1E & 0.5N of Elkton · Structure no. 000000006330205
- Built
- 1993
- 32 years old
- Condition
- Poor
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 92
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
487th Avenue over Ck is a prestressed concrete tee beam carrying 487th Avenue over Ck in Brookings County, South Dakota. It was built in 1993, so it is 32 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 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.
It carries about 92 vehicles a day, projected to reach 92 by 2042. The structure is 40 ft (12.2 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 487th Avenue over Ck built?
It was built in 1993, making it 32 years old in 2025.
What condition is 487th Avenue over Ck 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 September 2023.
How much traffic does 487th Avenue over Ck carry?
About 92 vehicles per day (2022 count).
How long is 487th Avenue over Ck?
The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.7 m) and a deck 23 ft wide.
Who owns 487th Avenue over Ck?
It is owned by the County Highway Agency.