Future engineering work

PAGE LAST UPDATED: 20/01/2019 21:25. Update now

See details of routes affected by planned engineering works, including when they take effect, maps of the affected area, alternative timetables, advice for alternative travel and real-time updates.

Buses replace trains between Carmarthen and Pantyffynnon / Swansea on Sunday 18 November

Start date
18/11/2018  00:00
End date
Route affected
Download map of route afected

Transport for Wales between Fishguard Harbour / Milford Haven / Pembroke Dock / Carmarthen and Swansea / Cardiff Central / Shrewsbury

Great Western Railway between Carmarthen and London Paddington

TOC(s) affected
Transport for WalesGreat Western Railway

Engineering work is taking place between Carmarthen and Pantyffynnon / Swansea, closing all lines.

Transport for Wales:

Replacement buses will run between Carmarthen and Pantyffynnon, and also between Carmarthen and Swansea. These buses will be timed to connect with train services.

Great Western Railway:

Services between Carmarthen and London Paddington will run between Swansea and London Paddington only. Replacement buses will run between Carmarthen and Swansea, calling at all booked stations.

Check before you travel:

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

You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages


Non folding bicycles are not allowed on rail replacement bus services at any time. Folding bicycles are allowed if fully folded. For more information, please see here.

Project Information:

You can read more about engineering work and why it is necessary.