Currently owned by the Massachusetts Department of Transportation (MassDOT), the area is taken up by a major highway interchange between 90, 93, and local streets.

The South Bay parcel, as well as the adjacent Chinatown and Leather District neighborhoods, sit on filled land.

Similarly, the railroad served as an immigrant gateway, a role which it played beginning in the late 19th century for many Asian newcomers, particularly Chinese.

In the 1950s, the Massachusetts Highway Department displaced much of the rail yards to build the John F. Fitzgerald Expressway (the Central Artery).

By using a variety of methods including soil freezing and tunnel jacking to maintain adjacent subway, freight and commuter rail operations, engineers were able to avoid major interruption of existing traffic flows.