Hi Joe,
The plan was eventually to connect the upper level to the main layout as a branch line. The lower level would also connect to the line that ran off to the right along the cliff under a city scene in the "new" Mott Haven section.
Unfortunately, I had to downsize the layout and dismantle that area before any of that could happen. Luckily, this area was documented in several OGR magazine articles before its demise.
Jim