Don't know yet. I'm still a bit shocked that up until a few hours ago TXDOT had a plan to make Hwy 290 contraflow, and now all of a sudden are claiming they can't do it because:
1) From their PR flak: We need the inbound lanes to get emergency vehicles in
2) From background: We found out that we didn't have enough personnel to staff the contraflow on the non-freeway portions (why the heck wasn't that figured out when the plan was created and approved?)
Also it appears that far more people tried to evacuate than expected, and sooner, too.
Every state hit with a huge storm at a new and fast-growing major metro has had trouble in the first evacuation, just like FL did. It is just too big to completely prepare for. Kinda like someone can write a book on how to ride a bike, but no matter how much you read it, your first ride ever is going to be shaky.
Are there no back roads people can drive through??
If I had to evacuate my area .. the last roads I would take would be the Turnpike, I-95 or even the Shurkill Expressway (aka .. Schuylkill Expressway)