The buildings will be developed in two phases with phase one containing 420,000 sf of space and a 725-space parking garage. The second phase of the project includes the construction of 220,000 sf of space and an underground pedestrian tunnel as well as a pedestrian bridge connecting the two buildings. As part of the development, a number of buildings on the MGH campus will be demolished.

According to Meredith Baumann, spokesperson for the BRA, the hospital has made significant changes to its original proposal for this project. While Baumann was not specific about the changes she tells GlobeSt.com that the original proposal has seen significant design changes. "This project went through a number of evolutions."

As part of the project, MGH will contribute $2.5 million to the redesign of the Charles/MGH MBTA Station. The first phase of the project is expected to be completed by October 2004, with phase two completing in 2006.