not sure what scale factor to apply.
also where is all the civil 3d stuff?
there appear to be no alignments, profiles, or assemblies....so how do you plan to 'scale' those features?
I can scale it 100 times....no problem...however I don't think that actually achieves what you are after.
example...corridor centerline alignment = 50 units...to scale that it would also need the alignment to be 5000 units long...and that changes the length of the profile, etc, etc....