Week commencing 3rd November
Dovey Junction – Aberystwyth: from 00:15 on Saturday 3rd November to 04:50 on Monday 5th November, a rail replacement service will operate between Machynlleth and Aberystwyth.
Week commencing 10th November
Cardiff Central – Rhymney: from 00:15 on Sunday 11th November to 12:20 on Sunday 11th November, a rail replacement service will operate between Cardiff Central and Rhymney.
Week commencing 17th November
Bangor – Holyhead: from 02:15 on Saturday 17th November to 04:35 on Monday 19th November, a rail replacement service will operate between Bangor and Holyhead.
Swansea – Carmarthen / Pantyffynnon: from 00:35 on Sunday 18th November to 03:20 on Monday 19th November, a rail replacement service will operate between Swansea and Carmarthen and between Swansea and Pantyffynnon.
Week commencing 24th November
Swansea – Llanelli / Carmarthen: from 00:30 on Sunday 25th November to 03:20 on Monday 26th November, a rail replacement service will operate between Swansea and Llanelli / Carmarthen.
Bangor – Holyhead: from 23:15 on Saturday 24th November to 04:25 on Monday 26th November, a rail replacement service will operate between Bangor and Holyhead.
Cardiff Central – Ebbw Vale Town: from 00:45 on Sunday 25th November to 13:45 on Sunday 25th November, a rail replacement service will operate between Cardiff Central and Ebbw Vale Town.