The Broadway Subway Project will see the addition of six underground stations and 5.7 kilometres of track to the Millennium Line. The extension will run from VCC-Clark Station to Arbutus Street; 700 metres will be elevated guideway and the remainder will be tunneled. The line will replace the existing B-line bus service, gaining the capacity to move three times as many people through the corridor. In September 2020, the Broadway Subway Project Corporation, an Acciona-Ghella joint venture, was announced as the contractor to design, build, and partially-finance the project at a value of $1.728 billion and began site preparation before the end of 2020. The province undertook early work to relocate trolley buses and some utilities beginning in 2019. Construction began in May 2021 and includes: Completion of building demolitions; Utility relocations continue across the alignment; Public consultation on stations designs; Began building traffic decks to maintain traffic flow during construction of the underground portions of the new stations.