Passengers planning to travel over the weekend of Saturday 1 and Sunday 2 April 2017 are advised that no trains will be operating between Cardiff Central and Cardiff Queen Street stations.
Improvement work is being carried out by Network Rail, who will be replacing track at the east end of platforms 4 and 6 at Cardiff Central station as part of the Cardiff Area Signalling Renewals (CASR) scheme.
The project has already transformed the signalling system in south Wales and allowed the potential for more trains to run along the track.
Neil Workman, programme manager at Network Rail Wales, said: “The Cardiff Area Signalling Renewal (CASR) project has helped to bust congestion and deliver a more reliable railway across the Cardiff and Valleys network, as well as providing a brand new platform and waiting area at Cardiff Central.
“This work is a cornerstone of our Railway Upgrade Plan to build a bigger, better railway here in Wales. We will continue to work with our partners Arriva Trains Wales and Welsh Government to improve our railway for passengers.
“We apologise to passengers and local residents for any inconvenience caused as we carry out this final piece of work.”
The work will be carried out from the early hours of Saturday 1 April until the early hours of Monday 3 April 2017. Network Rail staff will be working during the day and night to replace track using a range of heavy machinery.
During this time, no trains will run between Cardiff Central and Cardiff Queen Street stations and some services will be diverted via different routes into and out of Cardiff. There will also be rail replacement bus services running on some parts of the network.
Arriva Trains Wales say buses will replace trains between Cardiff Central and Cogan / Penarth / Barry Island / Bridgend via the Vale of Glamorgan on Saturday 1 and Sunday 2 April (All day)
Passengers are advised to check their journeys online at nationalrail.co.uk