document: A reduced service ran between Chester and Llandudno Junction with buses supplementing services.
  Buses replaced trains between Llandudno Junction and Blaenau Ffestiniog.
  There was also a warning that services between Llandudno Junction and Holyhead could have been affected by the work.
summary: Services have resumed on the north Wales coast main line and Blaenau Ffestiniog branch line after earlier disruption on Monday when engineering work overran.