Faint o filltiroedd o draciau rheilffordd sydd yng Nghymru nad ydynt yn cael eu defnyddio mwyach?
Wedi'i ateb gan Ysgrifennydd y Cabinet dros Drafnidiaeth a Gogledd Cymru
| Wedi'i ateb ar 17/06/2025
Rail infrastructure in Wales, other than the Core Valley Lines, is a reserved matter and is managed by Network Rail on behalf of the UK Government. Network Rail have advised they manage 1,355 miles of track across the Wales and Borders route. This figure takes into account double and single-track, but excludes the Core Valley Lines. Network Rail advise that closed or non-operational lines, including sidings, account for around 28 running miles. However, this does not include historic lines that have been closed, for example the Carmarthen to Aberystwyth line, or those lines that no longer have any remaining track.