The Photo above of the Drop Off area is somewhat different to the diagram in Post 2898.
Looks the same to me. 2 entry lanes and 5 drop off lanes that sweep back parallel to the multi story exit ramp before arriving at the pay barriers.
Seems the access route to the original multi story will follow the existing route with the car hire centre filling the gap that will one day become a new apron.
The Gateway upper structure starts off as a flattish tube before ending up as a blade. Also the whole bridge is curved.
