Ahead of the arrival of the new £150m fleet of Metro tram-trains, work is to begin next month to link the South Wales Metro Control Centre to the rail network.
This work includes raising the road bridge and creating a new tunnel to join the £100m control centre, maintenance facility and depot in Taff’s Well, Cardiff.
Transport for Wales (TfW) intends to split the work into two phases.
Phase 1 will involve preparatory works on the site, readying it for a new tunnel, between August 23 and December 10, 2021.
Then, pending planning approval, Phase 2 will involve the build of the new bridge between December 10, 2021 and Autumn 2022.
Alongside the works, contractors will also install deep drainage capabilities into the area, as well as modifying the nearby Taff’s Well station car park.
Karl Gilmore, TfW’s Rail Infrastructure Director, said: “We have a significant amount of work to carry out to create the South Wales Metro and this is a crucial phase of the development.
“We understand this is a lengthy road closure, however this is unavoidable due to the complexity of the tunnel construction. We’re working closely with the local authorities to ensure disruption is kept to a minimum.
“We will do everything we can to work responsibly by ensuring our sites are well managed and our people are considerate to our neighbours.”