I really don't think evacuation is a significant problem either, if people just use a little common sense. such as leave early enough and take the route of least resistance. Evacuation shouldn't be the main reason to widen the bridge, either. Making 331 safer and easier for people coming into our county should be the priority.
About 30-A traffic. There are restrictions on building based on the amount of traffic the new construction would generate, but these ordinances have been circumvented for decades. That, and the lack of vision in creating a better traffic environment, has pretty much led us down the path towards gridlock. Our government should have been planning for this for years, but no one has been doing a thing about it. A middle beach road should have been planned a long time ago, and now it's far too late. More north-south connectors should be built, but environmentalists have shot that idea down, as if one or two small highways through the forests would be the end of the world.
I've lived here a long time, and I see nothing that will ever alleviate the traffic problems that are building up. A moratorium on building? Not gonna happen. Demolition of the TDC? Not gonna happen. Sad as it sounds, traffic will probably drive me away from my home town...