It doesn't matter where you build the stadium, there will be an increase in traffic congestion on event days. You could build it on the moon and it would still create an inconvenience when you have 30,000+ attendees arrive and leave at the same time. Some sites are better than others as far as ease of creating manageably efficient traffic flow, but none give you any chance of eliminating congestion.
That's a good point, but like I said... I-20, 183, Bryant Irvin and Hulen are already congested. No mas. No mas.