471 Avenue over Ck
PoorPosted for loadGrant County, South Dakota · 7W & 2.1N Milbank · Structure no. 000000026220049
- Built
- 1926
- 99 years old, rebuilt 1965
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 34 ft
- 2 main spans
- Daily traffic
- 25
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
471 Avenue over Ck is a wood or timber stringer/multi-beam or girder carrying 471 Avenue over Ck in Grant County, South Dakota. It was built in 1926 and reconstructed in 1965, so it is 99 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 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. Its operating status is: posted for load restriction.
It carries about 25 vehicles a day, roughly 2% of them trucks, projected to reach 25 by 2032. The structure is 34 ft (10.4 m) long and 24 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 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 471 Avenue over Ck built?
It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1965.
What condition is 471 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 August 2024.
How much traffic does 471 Avenue over Ck carry?
About 25 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 471 Avenue over Ck?
The structure is 34 ft (10.4 m) long with a longest span of 16 ft (4.9 m) and a deck 24 ft wide.
Who owns 471 Avenue over Ck?
It is owned by the County Highway Agency.