SEPTA and Amtrak plan to reconnect their train stations (pedestrian) at 30th Street

JS - (RW and Everyone:)
I remember the connecting passageway between the SW corner of 30th Street Station and the Market Street
Subway (Market-Frankford Line and Sub-Surface Trolley Lines 10, 11, 13, 34 and 36) that was closed and sealed
in the early 1980s. There were staircases and escalators down to a segment of hallway that was under some of
the lower level tracks requiring a long descent from the 30th Street main hall level and then up into the 30th
Street subway station east end fareline area. The article mentions the physical problems that this passageway
had - but did NOT mention the prime reasons for the closure which were:

1 - There was a jurisdictional problem between the Amtrak and Philadelphia Police Transit Unit (before SEPTA
PD was created in the early 1980s) about which agency would patrol the passageway...
2 - The passageways had some crime problems: vandalism (graffiti, etc.); vagrancy and most importantly the
design of the passageway itself - in particular the bottom of the escalator and staircase from the Amtrak level
led to problems such as assaults and/or robberies being reported. There were some riders that knew about
the bad reputation that this connecting passageway had and refused to use it before its closure...

What I would like to see is the layout and rendering of how this new undergrade connection is going to be -
Being able to construct a new passageway without having to tunnel deep down below Amtrak track level
as the original one had should be key here...MACTRAXX