TWICE now I've been served undercooked (as in RED, not pink - see the photo I posted) ground beef at this location in a relatively short period of time. Unlike steak, it's never ok to eat undercooked ground beef. Even if nothing else touched the grill it's dangerous to eat undercooked ground beef.
When it happened the first time, I wrote it off as a fluke because franchises should have set-in-stone procedures for preparing every food item for sale. I'm sure Smashburger does have such standards but they're not followed at this location.
I've also experienced other gaffs here but won't go into detail because I don't want to detract from the issue of the food poisoning waiting to happen here.
Go to a different location, or eat somewhere else entirely. Just because your last burger was ok doesn't mean your next one will be. It would of course be ridiculous to write off both of my experiences as exceptionally coincidental.