No trains will run between Pontypridd and Radyr for two days to enable essential works to take place, Transport for Wales has confirmed.
The travel provider has said it's continuing to move forward with the building of the South Wales Metro, with work taking place in the spring.
The transformation of the Core Valley Lines for the Metro, which has been part-funded by the European Regional Development Fund through Welsh Government, will enable faster, more frequent services between Cardiff and the heads of the valleys.
