SD231 over Rapid Ck
FairPennington County, South Dakota · 0.1 E JCT Sd 445 · Structure no. 000000052399299
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 182 ft
- 4 main spans
- Daily traffic
- 20,057
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SD231 over Rapid Ck is a concrete continuous slab carrying SD231 over Rapid Ck in Pennington County, South Dakota. It was built in 1974, so it is 51 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 6 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 20,057 vehicles a day, roughly 1% of them trucks, projected to reach 27,578 by 2043. The structure is 182 ft (55.6 m) long and 66 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD231 over Rapid Ck built?
It was built in 1974, making it 51 years old in 2025.
What condition is SD231 over Rapid Ck 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 October 2024.
How much traffic does SD231 over Rapid Ck carry?
About 20,057 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is SD231 over Rapid Ck?
The structure is 182 ft (55.6 m) long with a longest span of 49 ft (14.9 m) and a deck 66 ft wide.
Who owns SD231 over Rapid Ck?
It is owned by the State Highway Agency.