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Buses replace late night / early morning trains between Swansea / Llanelli and Carmarthen from Monday 15 to Friday 19 September 

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Engineering work details

Starts Monday 15 September 2025 to Friday 19 September 2025

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Train operators affected

Route(s) affected

Transport for Wales between Shrewsbury / Cardiff Central / Swansea and Carmarthen

Description

Engineering work is taking place between Swansea and Carmarthen, closing all lines overnight from Monday evening until Friday morning.

Between 23:59 and 06:00 each night, buses will replace trains between Swansea / Llanelli and Carmarthen.

Check before you travel:

You can plan your journey using the National Rail Enquiries Journey Planner

Replacement Bus Travel Advice:

For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.

You can find the pick-up and set-down location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.

Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.

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