IRR Ar US083 over Horse Head Ck
FairMellette County, South Dakota · 3.1 S JCT Sd 44 E · Structure no. 000000048256262
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected February 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 147 ft
- 3 main spans
- Daily traffic
- 1,525
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR Ar US083 over Horse Head Ck is a steel continuous stringer/multi-beam or girder carrying IRR Ar US083 over Horse Head Ck in Mellette County, South Dakota. It was built in 1966, so it is 59 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 1,525 vehicles a day, roughly 19% of them trucks, projected to reach 1,914 by 2044. The structure is 147 ft (44.8 m) long and 43 ft wide. If it were closed, the detour would be 65.2 mi (105 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 | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR Ar US083 over Horse Head Ck built?
It was built in 1966, making it 59 years old in 2025.
What condition is IRR Ar US083 over Horse Head 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 February 2023.
How much traffic does IRR Ar US083 over Horse Head Ck carry?
About 1,525 vehicles per day (2024 count), of which roughly 19% are trucks.
How long is IRR Ar US083 over Horse Head Ck?
The structure is 147 ft (44.8 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.
Who owns IRR Ar US083 over Horse Head Ck?
It is owned by the State Highway Agency.