I don't know about Raspberries in particular, but other things are commonly said to give it 3 years. I don't know how much work it is, but my suggestion is don't risk it. If applicable get a bag of Pearls premium grass seed for the old spot. that grass does not grow very tall, so you can probably get away without mowing

If it was me I would grow other plants there for awhile, maybe a couple years, 3 to be safe. Maybe you can use the trellis for pole beans, or melons. Depending on how trellis is set up.
With beans you can tie string to the trellis and the plant will climb up the string.
As far as conditing the soil, no, not without ruining it, and that may not even work. You need to starve the virus out, it will take 3 years.
I'm not sure about tomatoes and peppers ? You might be able to grow them too, but they are another crop that requires rotation. One year beans, one year tomatoes, etc.
Actually beans and melons require rotation too.

Thanks for the suggestions. I guess it's time to find new locations for the new raspberries and try some other crops where the old raspberries were growing.

Good luck! Good news, lot's of cool raspberries around. I like Fall Gold, Prelude, Caroline, and Polka. I have many I planted last year that I will get a better sample of. Like Double Gold, Honey Queen, Cascade Gold, Rosanna, Encore, Taylor, and the black raspberry Allen. I'm adding Niwot the first primocane fruiting black raspberry Also adding Jewell this year.
This year I have been getting into peppers. I didn't know that they are really perennials and you can overwinter them. The 2nd year they fruit like crazy! If you can get them through the winter. Often fruiting in the winter too. I have lights for seed starts that I may use to try and overwinter with.