I090 E over Lone Rock Ck
FairMinnehaha County, South Dakota · 1.2 W Minnesota Line · Structure no. 000000050328166
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 92 ft
- 4 main spans
- Daily traffic
- 7,955
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I090 E over Lone Rock Ck is a concrete continuous slab carrying I090 E over Lone Rock Ck in Minnehaha County, South Dakota. It was built in 1959, so it is 66 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 7,955 vehicles a day, roughly 20% of them trucks, projected to reach 11,972 by 2044. The structure is 92 ft (28 m) long and 44 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. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I090 E over Lone Rock Ck built?
It was built in 1959, making it 66 years old in 2025.
What condition is I090 E over Lone Rock Ck 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 September 2024.
How much traffic does I090 E over Lone Rock Ck carry?
About 7,955 vehicles per day (2024 count), of which roughly 20% are trucks.
How long is I090 E over Lone Rock Ck?
The structure is 92 ft (28 m) long with a longest span of 23 ft (7.1 m) and a deck 44 ft wide.
Who owns I090 E over Lone Rock Ck?
It is owned by the State Highway Agency.