What was Waters Reach will now be known as Sir Alex Ferguson Way.
During the Scot’s 26 years in charge, United won 13 Premier League titles, including last season’s top-flight crown and two European Champions League trophies among a slew of silverware.
Ferguson, the most successful manager in British football history, retired at the end of last season.
Having revealed the new road sign, Ferguson said Monday: “It encapsulates probably the last 26 years – coming to the great club, the history of it.
“It’s been an incredible journey for me, ending today for me to unveil this road sign
“I’m really proud of that and I’m proud of everyone who has been associated with the club. I’d like to thank Manchester United for inviting me down here, 26 years ago. It was a fantastic elevation in my life and a challenge I accepted. And we are where we are now.
“It’s a great, great football club. You, the supporters, have enjoyed it. And I still think that a lot of our young fans don’t remember that there were bad days. Dealing with bad days is what we’re good at. This club will always go on.”
The 71-year-old added: “To have a part of Trafford carrying my name is truly humbling.”
Sir Alex Ferguson Way will be on the other side of the ground to another stadium approach road, Sir Matt Busby Way, named after Ferguson’s most illustrious predecessor as United manager and the man behind the club’s first European Cup triumph in 1968.