Expansion of Underground Concourse from Comcast Center to 19th and Arch.
Important Info: Brad over at phillyskyline.com first broke this story and did a tremendous job getting all the info on it. You can read the original article here- http://phillyskyline.com/acc1.htm PLEASE READ IT. And while you're at it read phillyskyline everyday because its pretty much the greatest thing ever.
Images
In roughly chronological order
Images made by members of the forum:
All images courtesy of Hill International and Kohn Pedersen Fox Associates.
Thanks to Brad at phillyskyline.com for the break on this awesome project and for posting the photos. I would also like to thank Late1 for the pictures from the zoning hearing, SJPhillyBoy for helping me organize images to post and for the images made by the members here on SSPF. If I didn't credit you with something please let me know...