While the Pittsburgh Steelers may not have a starting offensive line to be envious of, what they do have is pretty reasonable depth, under the circumstances, players who can step in and more or less keep up a similar level of play.
Since the return of Zach Banner from the Reserve/Injured List, their four backups have consisted of Banner, Joe Haeg, B.J. Finney, and J.C. Hassenauer. Of the four, only Banner is a single-position player, the latter two being center-guards and Haeg being a tackle-guard.
In a surprise move last week, the Steelers dressed Banner over Finney.