By Before and After, Abbreviations

Hi, Is this correct: I would like to travel to Boston, MA, and while I'm there visit my family. Is it correct to put another comma after the city abbreviation? In examples like this, commas before and after the MA are often omitted. Really, they should both be there. In fact, I'd say that, for...

do we add a comma before abbreviations like i.e. and e.g. and do these words followed by a comma again?