IRR Ar US012 over Burlington Northern RR
FairWalworth County, South Dakota · 0.3 E Corson CO Line · Structure no. 000000065005025
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 209 ft
- 5 main spans
- Daily traffic
- 2,071
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR Ar US012 over Burlington Northern RR is a concrete continuous slab carrying IRR Ar US012 over Burlington Northern RR in Walworth County, South Dakota. It was built in 1957, so it is 68 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 2,071 vehicles a day, roughly 12% of them trucks, projected to reach 2,705 by 2044. The structure is 209 ft (63.7 m) long and 34 ft wide. If it were closed, the detour would be 98.8 mi (159 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR Ar US012 over Burlington Northern RR built?
It was built in 1957, making it 68 years old in 2025.
What condition is IRR Ar US012 over Burlington Northern RR 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 IRR Ar US012 over Burlington Northern RR carry?
About 2,071 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is IRR Ar US012 over Burlington Northern RR?
The structure is 209 ft (63.7 m) long with a longest span of 43 ft (13 m) and a deck 34 ft wide.
Who owns IRR Ar US012 over Burlington Northern RR?
It is owned by the State Highway Agency.