UPDATE: Essential work has just commenced to protect the historic Cyfarthfa Castle in Merthyr Tydfil, as authorities respond to urgent safety concerns over its deteriorating condition. Starting on November 3, 2023, a new underground drainage system will be installed to combat significant water damage threatening the structure.
Officials from the Welsh Government and the Merthyr Tydfil County Borough Council are each contributing £2.25 million to finance this critical project aimed at safeguarding not only the castle but also the nearby Pont-y-Cafnau bridge, recognized as the oldest iron railway bridge in the world.
The castle, a treasured landmark situated within the scenic Cyfarthfa Park, has faced alarming deterioration over recent years. A council report in February 2025 highlighted the structure’s “significant state of deterioration,” with safety concerns mounting as parts of the building approached dereliction. In the past months, several ceilings collapsed, and access to certain rooms has been restricted.
This new drainage initiative will address the castle’s ongoing water management issues, which have been exacerbating the structural degradation. The project is designed to improve drainage across the park and castle, allowing for effective rainwater discharge and the prevention of further water ingress.
The new below-ground drainage network will run around the perimeter of the castle and through the gardens, significantly reducing flooding risks and improving stormwater management. This vital work aims to protect the building’s fabric, particularly at the basement level, where damage has been severe due to heavy runoff from the surrounding area.
During the installation, sections of footpaths and park areas may be temporarily closed to ensure public safety. The council is committed to minimizing disruption for residents and visitors while work is underway.
The drainage strategy will not only provide immediate relief but is also set to establish a long-term solution for the inadequate drainage that has plagued Cyfarthfa Park. Currently, many drainage routes are outdated and in poor condition, leading to waterlogging that has affected parkland and trees in recent years.
The project is expected to be completed by spring 2026, allowing for a restoration of this iconic site. Cyfarthfa Castle houses a museum and art galleries, with only 20% of the building currently open to the public, while 80% remains closed due to safety concerns.
With this urgent intervention, officials hope to preserve Cyfarthfa Castle for future generations, ensuring that this cultural landmark continues to stand proudly within the community. For ongoing updates, residents can follow developments through local news channels and newsletters focused on the area.
Stay tuned as this story develops and share the news about this crucial work to save Cyfarthfa Castle!
