Line a baking sheet with parchment paper.
Check the crabmeat and remove any pieces of shells or cartilage.
In a bowl, stir together mayonnaise, mustard, scallions, herbs, Old Bay seasoning, salt, and half of the bread crumbs.
Add the crabmeat and egg. Gently fold together with a rubber spatula until things start to stick together. If it's not sticking, add more breadcrumbs as needed.
Divide the mixture into 4 and form into individual cakes. Place them on the baking sheet.
Cover with plastic wrap and chill in the refrigerator for at least 30 minutes. This will help the cakes stick together when cooked.
Place the flour on a plate and lightly coat the crab cakes.
In a large skillet, heat the vegetable oil on medium-high.
Carefully place the crab cakes in the pan and cook 3-5 minutes on each side until golden brown and crispy.
Garnish with lemon wedges.