Further eastward extension of the line was delayed by World War II ; the Broadway -- East New York station opened on December 30 , 1946 .
At that time , Broadway Junction was an all - Brooklyn -- Manhattan Transit ( BMT ) transfer point .
Further eastward extension of the line was delayed by World War II ; the Broadway Junction -- East New York station opened on December 30 , 1946 .
At that time , Broadway Junction was an all - Brooklyn -- Manhattan Transit ( BMT ) transfer point .