Briggs missed his third straight practice on Friday, and is listed as questionable on the team's official injury report.
Briggs has missed only three games in his seven seasons with the Bears. He is the team's leading tackler through the first five games with 49 tackles and 31 solos. He has one sack, one interception, one forced fumble and one fumble recovery.
"He had a great week of practice," Smith said. "He feels good. He's ready to go."