The proposed enhancements will modernise the station and help long-term passenger progress, whereas nonetheless complementing the historical past and heritage of the constructing.
Plans embrace a bigger concourse to extend capability, enhance passenger stream and entry via extra gate-lines, and assist prospects hyperlink up with different methods to journey.
Planning and a choice on the complete enterprise case are anticipated in autumn this 12 months.
Enabling works, that are wanted on the southern facet of the station to pave the way in which for full development works, are anticipated to start later in 2025.
Alexia Course, Chief Business Officer at TfW, mentioned: “The proposals for the station kind a part of a wider vital funding going into reworking transport in central Cardiff, together with bold regeneration plans.
“We’ve submitted the complete enterprise case for the scheme and we’ll quickly be submitting the planning paperwork, and if that is accredited, we are able to progress with the supply of the enhancements.”