IRR I029 S over 149 ST (fas 6266)
FairGrant County, South Dakota · 6.2 S US 12 Interchange · Structure no. 000000026085070
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 132 ft
- 3 main spans
- Daily traffic
- 3,650
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR I029 S over 149 ST (fas 6266) is a concrete continuous slab carrying IRR I029 S over 149 ST (fas 6266) in Grant County, South Dakota. It was built in 1976, so it is 49 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 3,650 vehicles a day, roughly 40% of them trucks, projected to reach 5,146 by 2044. The structure is 132 ft (40.2 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 S over 149 ST (fas 6266) built?
It was built in 1976, making it 49 years old in 2025.
What condition is IRR I029 S over 149 ST (fas 6266) 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 November 2024.
How much traffic does IRR I029 S over 149 ST (fas 6266) carry?
About 3,650 vehicles per day (2024 count), of which roughly 40% are trucks.
How long is IRR I029 S over 149 ST (fas 6266)?
The structure is 132 ft (40.2 m) long with a longest span of 48 ft (14.6 m) and a deck 43 ft wide.
Who owns IRR I029 S over 149 ST (fas 6266)?
It is owned by the State Highway Agency.