I090 Wf over Big Ck
GoodLyman County, South Dakota · 2.1 W Oacoma Interch · Structure no. 000000043467261
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected December 2023
- Type
- Slab
- Concrete Continuous
- Length
- 93 ft
- 3 main spans
- Daily traffic
- 85
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I090 Wf over Big Ck is a concrete continuous slab carrying I090 Wf over Big Ck in Lyman County, South Dakota. It was built in 1971, so it is 54 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 85 vehicles a day, roughly 5% of them trucks, projected to reach 85 by 2043. The structure is 93 ft (28.4 m) long and 23 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I090 Wf over Big Ck built?
It was built in 1971, making it 54 years old in 2025.
What condition is I090 Wf over Big Ck in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.
How much traffic does I090 Wf over Big Ck carry?
About 85 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is I090 Wf over Big Ck?
The structure is 93 ft (28.4 m) long with a longest span of 33 ft (10.1 m) and a deck 23 ft wide.
Who owns I090 Wf over Big Ck?
It is owned by the State Highway Agency.