Sullivan Square is a traffic circle located at the north end of the Charlestown neighborhood of Boston, Massachusetts.
The presence of the railroad station lead to residential development west of Sullivan Square in East Somerville.
The Millers River and surrounding wetlands were filled primarily in the 1870s and 1880s for railroad yards, though Sullivan Square remained a transportation hub.
[6] Deferred maintenance, salt air corrosion, and complaints about noise led to the downfall of the Elevated (by then the MBTA Orange Line).
In 1975, the first phase of the Haymarket North Extension relocated the Orange Line alongside the railroad tracks on the west side of the square; the elevated station was soon demolished.