The Broadway Subway Extension will see the addition of six underground stations and 5.7 kilometres of track to the Millenium Line. The extension will run from VCC-Clark Station to Arbutus Street. The line will replace the existing B-line bus service, increasing transit capacity in the corridor by 250 per cent.
In September of 2018, the provincial and federal governments announced more than $3 billion in funding for both this and the Surrey LRT project.
In September 2020, the Acciona-Ghelia Joint Venture was awarded the contract to design, build, and partially-finance the project at a value of $1.728 billion. Early construction works got underway before the end of 2020.