TPK Grade Separated U-Turns, MP 6.4 - 46.1
What is that, and where is the access from the car truck?
This will be for official vehicle u-turns over or under the roadway, rather than turning in the median breaks.
This will only in the normal 3x3 roadway south of Exit 6, not where there's 4 roadways north of Interchange 6.
I recall seeing past plans where 2 will be built; one around Woodcrest station between Interchanges 3 & 4, and I forget offhand where the other will be constructed. I'm not sure if this expands on that plan or not.
I would guess that they're leaving most of the existing median breaks in; this will just provide for easier access of larger/longer vehicles to access the opposing direction, rather than making u-turns at the interchanges (which, technically, they're not supposed to do, but they do).