30870 454 Ave over Clay Ck Ditch
FairClay County, South Dakota · 1.0W & 6.7S Wakonda · Structure no. 000000014020117
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected August 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 5
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
30870 454 Ave over Clay Ck Ditch is a prestressed concrete tee beam carrying 30870 454 Ave over Clay Ck Ditch in Clay County, South Dakota. It was built in 1975, so it is 50 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 fair condition with a lowest component rating of 5 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 5 vehicles a day, roughly 2% of them trucks, projected to reach 19 by 2032. The structure is 65 ft (19.8 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 30870 454 Ave over Clay Ck Ditch built?
It was built in 1975, making it 50 years old in 2025.
What condition is 30870 454 Ave over Clay Ck Ditch 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 August 2024.
How much traffic does 30870 454 Ave over Clay Ck Ditch carry?
About 5 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 30870 454 Ave over Clay Ck Ditch?
The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.2 m) and a deck 28 ft wide.
Who owns 30870 454 Ave over Clay Ck Ditch?
It is owned by the County Highway Agency.