30999 477th Ave over Ck
PoorPosted for loadUnion County, South Dakota · 9S & 2W Alcester · Structure no. 000000064070130
- Built
- 1989
- 36 years old
- Condition
- Poor
- inspected August 2024
- Type
- Channel Beam
- Concrete
- Length
- 26 ft
- 1 main span
- Daily traffic
- 300
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
30999 477th Ave over Ck is a concrete channel beam carrying 30999 477th Ave over Ck in Union County, South Dakota. It was built in 1989, so it is 36 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 3 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 300 vehicles a day, roughly 12% of them trucks, projected to reach 300 by 2032. The structure is 26 ft (7.8 m) long and 29 ft wide.
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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 30999 477th Ave over Ck built?
It was built in 1989, making it 36 years old in 2025.
What condition is 30999 477th Ave 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 30999 477th Ave over Ck carry?
About 300 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is 30999 477th Ave over Ck?
The structure is 26 ft (7.8 m) long with a longest span of 24 ft (7.3 m) and a deck 29 ft wide.
Who owns 30999 477th Ave over Ck?
It is owned by the County Highway Agency.