Will the new Manchester Piccadilly platforms 15 and 16 have tracks that will impinge on part of the existing former track area approaches to Manchester Mayfield railway station ?
No idea, I havn't even see the design specification for the platforms visa vie length, width, access etc.
If they go for the most futureproofed plan then I can see encroaching onto the old approaches at Mayfeild, but it's almost definately doing to take up some of the old signalling centre that is now concreted over.
Futureproofed:
Two new platforms with a new concourse access from the current main concourse, step free by ramped moving walkways, fixed stairways provided and lift intergration with the current main mesamine, sorry costa coffee, you're going. Semi segregated entry/exit flows onto 13, 14, 15, 16.
Provision to be put into place for bay platforms between the new through platforms (if not completed at construction stage) for terminating services from either direction, either as part of the service pattern (stoppers on the CLC).
Alternatively headshunt sidings between the US and DS with independant access from 14 & 15 for turning services short of MIA / SPT. This would proberbly be less expensive and better for passenger flow, but one would need to throw detrainment staff out for busy times.