The context is as follows:
the player's party wants to cross a bridge and the bandit leader says "何だお前ら？ ここを通りたきゃ通行料1000000G置いてきな！！"
So he wants the characters to pay a toll, but I have trouble understanding the "通りたきゃ" part.
Is it derived from "通りたいなら" or something else?
