To get a clarification:
You can bridge YOUR TRN and YOUR Troops (1 pt for TRN to load 1 pt. for TRN to unload) without moving the TRN provided the unit in question has the movement pts available for doing so (like Mech Infantry or Tanks?).
I’m not sure how this is handled with LHTR.
You can bridge INF too.
But no unit can move on land before or after being transported.