# Rheilffordd arfordir y gogledd i gau am fis cyfan i wneud gwelliannau

- Published: 2026-09-29T05:32:50.247Z
- Updated: 2026-09-30T14:04:02.168Z
- 1 source
- Topics: Conflict, war and peace, Economy, business and finance
- Involves: Avanti West Coast, Caer a Chaergybi, Cau'r llwybr arfordir gogledd Cymru, Chris Liptrot, Closure of the North Wales coast railway, Cyffordd Llandudno a Chaergybi, Cyngor Dinas Casnewydd, Emma Osborn, Ken Skates, Network Rail, Tomos Roberts, Trafnidiaeth Casnewydd

## How it developed

- 2026-09-29T05:32:50.247Z - BBC Cymru Fyw: [Rheilffordd arfordir y gogledd i gau am fis cyfan i wneud gwelliannau](https://www.bbc.co.uk/cymrufyw/erthyglau/c51kxd1j88g9o)
- 2026-09-30T14:04:02.168Z - BBC Cymru Fyw: [Casnewydd: Mynnu 'tryloywder' gan gwmni bysiau sy'n wynebu 'argyfwng'](https://www.bbc.co.uk/cymrufyw/erthyglau/cmvgy2xvj9jko)

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