The city quickly turned off the tap and started pumping the water out.
The break flooded 50th and 51st avenues, at 11th Street, on the Queens side of the Pulaski Bridge.
The back end of a truck fell into a sinkhole in Mott Haven just before 7 p.m. Sunday.
NewsCopter 7 was above the water main break at the intersection of Madison Street and Seventh Street.
Residents were waking up on Thursday to find their streets completely under water.
The initial damage went from buckling asphalt to to a massive, gaping hole nearly 10 feet in diameter within hours.