I090 WB Off Ramp over Main ST R&w RR
FairBrule County, South Dakota · Chamberlain Interch · Structure no. 000000008066095
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 274 ft
- 4 main spans
- Daily traffic
- 335
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I090 WB Off Ramp over Main ST R&w RR is a steel continuous stringer/multi-beam or girder carrying I090 WB Off Ramp over Main ST R&w RR in Brule 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 335 vehicles a day, roughly 10% of them trucks, projected to reach 485 by 2043. The structure is 274 ft (83.6 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I090 WB Off Ramp over Main ST R&w RR built?
It was built in 1974, making it 51 years old in 2025.
What condition is I090 WB Off Ramp over Main ST R&w RR 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 January 2025.
How much traffic does I090 WB Off Ramp over Main ST R&w RR carry?
About 335 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is I090 WB Off Ramp over Main ST R&w RR?
The structure is 274 ft (83.6 m) long with a longest span of 92 ft (28 m) and a deck 29 ft wide.
Who owns I090 WB Off Ramp over Main ST R&w RR?
It is owned by the State Highway Agency.