Network Rail is modernising and upgrading main junctions and infrastructure, and electrifying the Scottish railway, including the main line between Edinburgh and Glasgow.
It will be a far cry from the station that opened in 1842 while retaining its Victorian features, like its striking glass roof:
The contract for Queen Street's roof, dated September 1878
The proposed reconstruction of the station, probably from the 1930s
An 1930 article in Railway Magazine said Queen Street "had become the scene of vastly increased traffic, and, in the course of the years, any 'pristine newness' it presumably possessed in 1842 had worn off".
It said that in 1877, "powers were obtained" for improvements, including an expansion of the station by opening some of the tunnel and widening the station to approximately the dimensions of the 1930s.
On completion next year, the new concourse will be much bigger, leading to less crowding for passengers.
The project reached a major milestone in October when we completed all necessary demolition work, including the removal of the eight-storey Consort House.
Since January last year, the demolition team had worked more than 26,000 hours to safely remove more than 14,000 tonnes of redundant material from the station site - the equivalent of 700 skips.