SD240 over I090
FairPennington County, South Dakota · West Wall Interchange · Structure no. 000000052900360
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 411 ft
- 4 main spans
- Daily traffic
- 630
- 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 Pennington County, South Dakota. It was built in 1968, so it is 57 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 630 vehicles a day, roughly 3% of them trucks, projected to reach 994 by 2044. The structure is 411 ft (125.2 m) long and 47 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 SD240 over I090 built?
It was built in 1968, making it 57 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 October 2023.
How much traffic does SD240 over I090 carry?
About 630 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is SD240 over I090?
The structure is 411 ft (125.2 m) long with a longest span of 113 ft (34.3 m) and a deck 47 ft wide.
Who owns SD240 over I090?
It is owned by the State Highway Agency.