30430 446th Avenue over Unnamed Creek
PoorPosted for loadYankton County, South Dakota · 1.7N & 5W of Volin · Structure no. 000000068180133
- Built
- 1941
- 84 years old
- Condition
- Poor
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 53 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
30430 446th Avenue over Unnamed Creek is a concrete continuous slab carrying 30430 446th Avenue over Unnamed Creek in Yankton County, South Dakota. It was built in 1941, so it is 84 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 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 100 by 2032. The structure is 53 ft (16.3 m) long and 27 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 30430 446th Avenue over Unnamed Creek built?
It was built in 1941, making it 84 years old in 2025.
What condition is 30430 446th Avenue over Unnamed Creek 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 30430 446th Avenue over Unnamed Creek carry?
About 100 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 30430 446th Avenue over Unnamed Creek?
The structure is 53 ft (16.3 m) long with a longest span of 16 ft (4.9 m) and a deck 27 ft wide.
Who owns 30430 446th Avenue over Unnamed Creek?
It is owned by the County Highway Agency.