SD034 over Hay Ck
FairButte County, South Dakota · 4.2 W JCT US 85 · Structure no. 000000010055397
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 164 ft
- 4 main spans
- Daily traffic
- 1,127
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD034 over Hay Ck is a concrete continuous slab carrying SD034 over Hay Ck in Butte County, South Dakota. It was built in 1956, so it is 69 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 1,127 vehicles a day, roughly 11% of them trucks, projected to reach 1,617 by 2044. The structure is 164 ft (50 m) long and 34 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 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 SD034 over Hay Ck built?
It was built in 1956, making it 69 years old in 2025.
What condition is SD034 over Hay 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 January 2024.
How much traffic does SD034 over Hay Ck carry?
About 1,127 vehicles per day (2024 count), of which roughly 11% are trucks.
How long is SD034 over Hay Ck?
The structure is 164 ft (50 m) long with a longest span of 43 ft (13 m) and a deck 34 ft wide.
Who owns SD034 over Hay Ck?
It is owned by the State Highway Agency.