Cook bacon, set aside
Preheat oven to 350°
Mix crab meat, celery, onion, 1/2 cup grated cheese, mayonnaise, and salt until combined.
Toast the bottom buns slightly.
Spoon crab mixture onto burger bun and press together to form onto the bun.
Bake burgers in the oven for 8-10 minutes, just until warm.
Take out from oven and lay a tomato slice on top followed by two slices of bacon and extra cheddar cheese.
Broil on low until cheese is melted.