As reported by ESPN, Bradford had surgery that "cleaned up" his knee Tuesday in Florida.
Coach Mike Zimmer said he didn't expect Bradford's left knee injury, aggravated in Week 5, to take so long to heal but expressed confidence in his current quarterbacks.
Multiple reports have indicated that Case Keenum will likely start this week against Washington. He was placed on the Physically Unable to Perform (PUP) list to start the season, before being cleared to return to practice on October 16. He saw Bradford on September 22 and determined then that no additional surgery was needed. Bridgewater is scheduled to become a free agent at the end of the season. He did start 15 games for Minnesota last season, after the Vikings sent a first-round draft pick to Philadelphia to acquire him in the days after Bridgewater's injury.
North Korea Threatens 'Merciless Punishment' On US After Trump's 'Foolish Remarks'
It comes after a series of missile and nuclear tests in the past few months, a sharp escalation from recent years. South Korea's foreign minister made similar remarks during a parliament committee meeting earlier last week.
Bradford has a 9-8 record as a starter in Minnesota and has thrown 23 touchdowns to five interceptions with a 71.8 completion percentage.
Vikings game kicks off at noon Sunday on FOX.
The Vikings' 2014 first-round pick tore his ACL and dislocated the left knee during a late August practice past year.
Bridgewater is expected to serve as the backup, with quarterback Kyle Sloter also on the roster.