For years, the Packers have had a strong offensive line.
That didn't happen by accident. They have great coaching and have invested heavily in it.
They've drafted at least one offensive lineman in each of the last 6 years and took 5 over the last two years (plus 5 more undrafted free agents in those two years). In free agency, they've picked up guys like Dennis Kelly, Jared Veldheer, and Billy Turner to build depth and competition.
However, there's still a lot of questions on the line, especially at tackle, thanks to an aggressive front office and some brutal injuries.