SD324 over Medary Ck
FairBrookings County, South Dakota · 0.8 E I 29 Interch · Structure no. 000000006193211
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected August 2023
- Type
- Slab
- Concrete Continuous
- Length
- 209 ft
- 5 main spans
- Daily traffic
- 1,336
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD324 over Medary Ck is a concrete continuous slab carrying SD324 over Medary Ck in Brookings 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 1,336 vehicles a day, roughly 15% of them trucks, projected to reach 2,009 by 2044. The structure is 209 ft (63.7 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD324 over Medary Ck built?
It was built in 1974, making it 51 years old in 2025.
What condition is SD324 over Medary 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 August 2023.
How much traffic does SD324 over Medary Ck carry?
About 1,336 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is SD324 over Medary Ck?
The structure is 209 ft (63.7 m) long with a longest span of 43 ft (13 m) and a deck 35 ft wide.
Who owns SD324 over Medary Ck?
It is owned by the State Highway Agency.