Jernigan signed with the Broncos on Wednesday, Kyle Newman of The Denver Post reports.
Jernigan was cut by the Jaguars earlier this week, but he quickly found a new team. The Broncos need the depth after news that Jurrell Casey (torn biceps) will miss the rest of the season, so Jernigan will slot in behind DeShawn Williams and Shelby Harris at defensive end. It's possible he suits up Thursday against the Jets.