I tried to find where they had corridor protection but I can't find it online.

I've seen this picture before, but I'm not sure if I understand all of the plans here.
IL-3 is to be moved to the blue corridor. Does that mean that the interchanges currently involving IL-3 are to be demolished? Is th full corridor to be a freeway?
I-70 is to follow one of the red routes to meet with I-55 far away from I-64. This may be good for traffic.
I-55 and I-64 would still follow their current routings from the Poplar St Bridge. The existing connector from the Stan to 55/64/70 would need a new number, maybe a I-x64, as most traffic using this connector would be heding to I-64.
Is anything being done to make it easier to connect I-55/64 with the Eads and MLK bridges?