Why is Bird Road where the celebrations happen?

Relatively new to Miami (8 years). Any lifers know how this started? Seems that most cities' celebrations are in the downtown area. I live in Brickell and there was no celebrating, no lines of cars, no one banging pots and pans, etc. Just curious. Must be some type of old tradition that birthed during the LeBron days with the Heat? Or maybe the Marlins' two World Series?