Are we talking about (old) Alpha taxiway that was changed to Bravo earlier this year?
Sorry where Bravo crosses the existing bridge (was Alpha) it will be pushed to one side and then put back as the cut and cover tunnel progresses into the CTA as seen in this photo from 1998. Unlike this photo where the tunnel popped out after crossing what was then Alpha, the new cut and cover tunnel will carry on all the way to its new station. The ring road that was completed just over a year ago and has just been moved for the new hump will have to move a further two times before it reaches the hump to allow the tunnel to cross under the road.
For most passengers they will be thinking that the building work is now coming to an end. Little do they know!
20 years later the temporary route for alpha can still be seen although part of its width was grassed over
What's the occupancy like in the existing Multi Story
It is rammed full. The priority parking which used to park on the top 2 floors has moved out although passengers still check in on the second floor due to the loss of the short term car park. The airport now charge a minimum of £8 for just 30 minutes to control numbers. As for safeguarding for stands look at the above post that shows the temporary drop off zone and now think of 4 or 5 stands facing the camera. The issue would then be could the terminal and CTA cope with the extra passengers as it will be maxed out with the existing stands.