SD048 over I029
FairUnion County, South Dakota · Sd 48 Interchange · Structure no. 000000064006160
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 254 ft
- 4 main spans
- Daily traffic
- 847
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD048 over I029 is a steel continuous stringer/multi-beam or girder carrying SD048 over I029 in Union County, South Dakota. It was built in 1961, so it is 64 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 847 vehicles a day, roughly 29% of them trucks, projected to reach 1,304 by 2044. The structure is 254 ft (77.4 m) long and 32 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD048 over I029 built?
It was built in 1961, making it 64 years old in 2025.
What condition is SD048 over I029 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 2023.
How much traffic does SD048 over I029 carry?
About 847 vehicles per day (2024 count), of which roughly 29% are trucks.
How long is SD048 over I029?
The structure is 254 ft (77.4 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.
Who owns SD048 over I029?
It is owned by the State Highway Agency.