Transport for Wales is excited to announce that the Rhymney valley railway line will undergo major enhancements as part of the next phase of the South Wales Metro. Starting at the end of March 2025, TfW will deliver an intensive 8-month programme of engineering work that will transform and electrify over 15km of railway line.
Brand-new trains (Class 231s) were introduced to the Rhymney valley line in 2023 as part of TfW’s £800 million investment into brand-new trains across Wales. These further infrastructure improvements will enable electrified trains (Class 756s) to be introduced to the line, delivering faster, greener and more accessible transport to the communities of South Wales.
Infrastructure works in the Rhymney Valley are set to deliver a comprehensive modernisation of the railway line. The ambitious project will include the installation of Overhead Line Equipment to fully electrify the route, significantly reducing the line’s carbon footprint and enabling more efficient train services. Railway fencing will be upgraded and overgrown vegetation will be cut back to improve safety and reliability along the corridor.
The transformation will also feature extensive tracks and signalling upgrades throughout the line, including necessary track lowering works to accommodate the new electrification infrastructure. Rhymney station itself will benefit from substantial improvements, with enhanced sidings being constructed to house the new fleet of trains that will serve the route once the project is completed.
