I090 W over Sundance RD
GoodLyman County, South Dakota · 3.6 E US 83 N Interch · Structure no. 000000043063195
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 80 ft
- 3 main spans
- Daily traffic
- 3,803
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I090 W over Sundance RD is a concrete continuous slab carrying I090 W over Sundance RD in Lyman County, South Dakota. It was built in 1970, so it is 55 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 3,803 vehicles a day, roughly 25% of them trucks, projected to reach 5,431 by 2044. The structure is 80 ft (24.4 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I090 W over Sundance RD built?
It was built in 1970, making it 55 years old in 2025.
What condition is I090 W over Sundance RD 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 January 2025.
How much traffic does I090 W over Sundance RD carry?
About 3,803 vehicles per day (2024 count), of which roughly 25% are trucks.
How long is I090 W over Sundance RD?
The structure is 80 ft (24.4 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.
Who owns I090 W over Sundance RD?
It is owned by the State Highway Agency.