This makes no sense at all, to me. Highway 290 East, and State Highway 71/Ben White Boulevard. Are all the same east-west road. I35 runs under them. Since Highway 290 and 71 are akready the same road, these 'managed lanes' would only be the width of the highway. A 'flyover' changing an underpass to an overpass would do nothing to change the I35 congestion, even after all the construction would end (in several years).
Traffic going north on I35 is always congested before this intersection, but the congestion usually ends about a mile BEFORE it gets there. There has been construction in this part for the last several years, but that is finally ending.
Traffic going south on I35 is always congested through Austin, but that congestion usually ends before it gets there, too.
I have no idea why adding more flyovers to to a highway and an intersection that is not congested will effect the traffic at all on the highway below it. I35 is really bad all through Austin. Why not fix that, instead?
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.