Faint yw'r gost a ragwelir ar gyfer y gwaith o gynnal a chadw gwifrau uwchben ar linellau metro newydd Trafnidiaeth Cymru?
Wedi'i ateb gan Ysgrifennydd y Cabinet dros Ogledd Cymru a Thrafnidiaeth
| Wedi'i ateb ar 27/03/2024
Once the overhead line equipment is fully energised and operational, Transport for Wales anticipate a full-year maintenance cost to be of c. £600k (in 2023/24 prices).