The Bears on Wednesday signed tackle Mike Adams and waived offensive lineman Nick Becton.
Adams has appeared in 41 games with 20 starts over three seasons with the Steelers from 2012-14. The 6-7, 323-pounder was selected by Pittsburgh in the second round of the 2012 draft out of Ohio State. He missed all of last season with a back injury.
Becton appeared in five games as a reserve with the Bears last season after playing in one contest with the Chargers in 2013. He has also spent time with the Saints and Giants.