I think they’re talking about the northern US 290 interchange just south of US 183. There are only 4 direct connectors. All other traffic must use the frontage roads to switch highways. So the PTB will just add more direct connectors for more of the traffic at that interchange.
Aaah, that makes a lot more sense. I’m not an Austin resident, I just drive through it once and a while. Your explanation makes a lot more sense. I never even knew there was a northern 290. I stared at an Austin map for 5 minutes, but never noticed the northern 290. I’ve driven to the airport a lot, and always connected from 71 to 290 before getting on I35 south. I even opened a TX Tag account, solely to avoid Austin.
So then the question becomes “where do they put the ‘managed lanes’ in the double deck area?” I guess that’s why it will take a lot of planning.