SD240 over I090
FairJackson County, South Dakota · Cactus Flat Interchange · Structure no. 000000036120107
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected March 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 307 ft
- 4 main spans
- Daily traffic
- 1,154
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD240 over I090 is a steel continuous stringer/multi-beam or girder carrying SD240 over I090 in Jackson County, South Dakota. It was built in 1974, so it is 51 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 1,154 vehicles a day, roughly 4% of them trucks, projected to reach 1,664 by 2044. The structure is 307 ft (93.6 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 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 SD240 over I090 built?
It was built in 1974, making it 51 years old in 2025.
What condition is SD240 over I090 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 March 2025.
How much traffic does SD240 over I090 carry?
About 1,154 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is SD240 over I090?
The structure is 307 ft (93.6 m) long with a longest span of 83 ft (25.3 m) and a deck 47 ft wide.
Who owns SD240 over I090?
It is owned by the State Highway Agency.