IRR I029 N over 110 ST (fas)
FairRoberts County, South Dakota · 4.4 S Sd 127 Interchange · Structure no. 000000055161100
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 139 ft
- 3 main spans
- Daily traffic
- 2,780
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR I029 N over 110 ST (fas) is a concrete continuous slab carrying IRR I029 N over 110 ST (fas) in Roberts County, South Dakota. It was built in 1980, so it is 45 years old, younger 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 2,780 vehicles a day, roughly 45% of them trucks, projected to reach 3,453 by 2044. The structure is 139 ft (42.5 m) long and 43 ft wide.
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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR I029 N over 110 ST (fas) built?
It was built in 1980, making it 45 years old in 2025.
What condition is IRR I029 N over 110 ST (fas) 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 July 2024.
How much traffic does IRR I029 N over 110 ST (fas) carry?
About 2,780 vehicles per day (2024 count), of which roughly 45% are trucks.
How long is IRR I029 N over 110 ST (fas)?
The structure is 139 ft (42.5 m) long with a longest span of 53 ft (16.1 m) and a deck 43 ft wide.
Who owns IRR I029 N over 110 ST (fas)?
It is owned by the State Highway Agency.