It is probably worth noting the Wood Street side of the garage is supposed to get a facade treatment, which I don't think it has gotten yet. How much it will actually help remains to be seen. Note it is behind the ISDA building (which has since lost its awning) so couldn't actually have ground-floor retail entrances on that side, but it is in fact retail back there with entrances on Forbes:
First floor floorplan:
http://towertwosixty.com/wp-content/uplo...asing-Plan_REVISED-Ground-Floor-Plan.png
By the way, when you include the retail, office, and hotel portions, the garage is maybe around 30% of the total use.
Edit: Sorry, didn't realize some of these images were so big. I am changing those to links.