en.wikipedia.org
Neither “Methadone Mile” nor the intersection at Mass Ave and Milnea Cass Blvd accurately describe the location.
The Methadone Clinic (Boston Comprehensive Treatment Center) is at the far end of Topeka Street, in between the jail and MBTA garage. Topeka intersects Southampton Street, which is one way, northbound. Southampton runs into Mass Ave and the freeway connector.
The tent city used to comprise several of the side streets, including the connector to I93. When Wu first shut it down it migrated to the Newmarket Square area. That got bulldozed.
Now the city has shut down the side streets off Southampton, with police regularly stationed there. There is a smaller tent city that has sprouted up along Southampton that seems to be back 24/7. It fully occupies the sidewalk there so you can’t often use the right lane.
According to the medical director at the clinic, they support a community that includes most of E Mass and from S NH to N RI. No one wants a Methadone clinic so they wind up in Boston. So while it’s a “Boston Problem” it’s not just a Boston Problem.