...Sort of.
Yeah, there are four gates to get into and out of the park. And there are multiple parking lots (main lot, marina, behind Blue Streak, Cedars Dorm, behind Gemini, Soak City, Camper Village, Breakers, Sandcastle, maintenance/marketing/food, etc.). And there are two roads to get from the main parking lot back to the mainland. But both of those roads converge at the main parking toll plaza, so the fact that there are two roads doesn't help a whole lot at the first point of congestion...
--Dave Althoff, Jr.