I'll bet that a lot of the East-West roads that the corridor crosses will be terminated at the junction of the road with the corridor. There will be no bridges built to cross the corridor to resume travel on the other portion of the road. I smell a rat.
Small villages and families will be isolated by the corridor. Ambulances and firefighters will not have quick access to isolated areas made by the corridor.
I"m sure some will be.... Especially the smaller two lane roads just above a dirt/gravel type road. But I suspect most FM/State/US/etc roads will be routed over or under.... We'll see as the plans develop.