Network Rail are urging passengers to plan ahead if they are planning on using the Sunday rail service on the Cambrian line in February and March.
This is because Network Rail will be completing track renewal work between Newtown and Pwllheli and Aberystwyth.
The track is currently bolted together and will be removed and replaced with new rail and will result in a reduction in noise for those living near the railway, and a better ride for passengers.
For Network Rail to deliver essential track renewal work, some weekend services in the North-West of the Wales and Borders rail network will be replaced with buses throughout February until mid-March.
On Sunday 10, 17 and 24 February and Saturday 16 and Sunday 17 March, buses will replace trains between Newtown and Machynlleth.
Buses will also replace trains between Machynlleth and Aberystwyth and Machynlleth and Pwllheli on Saturday 2, Sunday 3 and Sunday 10 March, with buses replacing trains between Machynlleth and Aberystwyth on Saturday 9 March.
What did the officials say?
Kevin Felton, scheme project manager for Network Rail said:
“We would like to thank passengers and the local community in advance for their patience while we carry out this work as part of our Railway Upgrade Plan.
“The renewal work will ensure the railway remains reliable long into the future and reduce the need for short-notice maintenance work. We are working closely with Transport for Wales to ensure passengers are able to get to where they need to be during this upgrade work.
David Crunkhorn, Cambrian Line station manager for Transport for Wales, said:
“We would like to thank our customers for their patience while this essential upgrade work is taking place by our partners in Network Rail.
“We have worked closely with Network Rail to minimise the impact of the disruption where possible and we urge our customers to check journey details prior to travelling.”