Square was placed on hold for 45 days for city and state agencies to propose reuse. This deadline was later delayed to November. The station was ultimately demolished beginning in March 1976. Only supports for the footbridge crossing the traffic circle remain of the elevated station. A similar structure at the Dudley Square station was preserved, lowered to ground level, and reopened in 1993 as a major bus transfer station. Sullivan station was not originally accessible. Construction of elevators at Sullivan and Wellington took place in 1991–92. In 2002, as part of its public art program, the MBTA added panels with artworks by local schoolchildren at Sullivan Square and . The concrete walls of the station trench are frequently covered by large graffiti works. A 2018–2019 construction project, funded as part of environmental mitigation of the new Encore Boston Harbor casino, reconfigured Sullivan Square roadways and the station busways. The lower busway was divided into two lanes, and a new exit to Cambridge Street was added at the south end of the busways. Three short sections of bus-only turn lane on Beacham Street, Maffa Way, and Main Street were added for buses entering the station. Repairs to the platforms and canopies were bid in 2018; , completion is expected in June 2021. Plans Sullivan Square was a proposed stop on the Urban Ring – a circumferential bus rapid transit (BRT) line designed to connect the existing radial MBTA rail lines to reduce overcrowding in the downtown stations. Under draft plans released in 2008, Urban Ring buses would have used the existing bus loop, and a new platform would be built to serve the Haverhill and Newburyport/Rockport commuter rail lines. The project was cancelled in 2010 A $10.5 million design contract for accessibility improvements at , , and Sullivan Square was awarded in April 2020. The MBTA planned to add three elevators to the station, including an elevator to the lower busway. The work would also include replacement of the existing elevators, and two footbridges to connect the new elevators. Design reached 30% in 2021; by that time, the project scope had been reduced to remove the two new platform elevators and footbridges, leaving only the elevator replacements plus the new busway elevator. Design work was expected to reach 75% completion in 2022, but this did not occur. A 2013 city study called for air rights development, including parking garages and