Minnesota waived tight end Kyle Carter to create a roster spot for Bradford.
Bradford has practiced the past two weeks.
Minnesota had a bye during the Wild Card round and is preparing to host New Orleans on Sunday in a Divisional game.
Bradford started against the Saints in Week 1 and completed 27 of 32 passes for 346 yards with three scores and a career-best passer rating of 143.0.
He suffered a knee injury during the game that sidelined him in Weeks 2, 3 and 4, when the Vikings first turned to Case Keenum.