Assume that the U.S. government has just announced that all technical problems regarding interstellar travel have been solved, and that planning for the first interstellar spacecraft is proceeding.
That’s slang for impossible, as in ain’t gonna happen.
It would take anywhere from 19,000 to 80,000 yrs, depending on technology used. And that’s just to get the our closet star group, the Centauri trio. As far as the first one to remotely have a chance to support life, fahgetta bout it.