Future engineering work

PAGE LAST UPDATED: 28/01/2020 22:25. 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 Bristol Parkway / Chepstow / Cwmbran / Ebbw Vale Town and Cardiff Central until Thursday 2 January

Start date
27/12/2019  00:00
End date
Route affected
Download map of route afected

CrossCountry between Birmingham New Street and Cardiff Central

Great Western Railway between London Paddington / Brighton / Portsmouth Harbour / Southampton Central and Cardiff Central / Swansea / Carmarthen

All Transport for Wales via Cardiff Central

TOC(s) affected
CrossCountryGreat Western RailwayTransport for Wales

Engineering work is taking place between Severn Tunnel Junction and Bridgend, closing various lines throughout the day.


Buses will replace trains between Chepstow and Cardiff Central. 

Great Western Railway

A replacement bus service will operate between Bristol Parkway and Newport / Cardiff Central / Bridgend. 

Trains between Cardiff Central and Portsmouth Harbour are diverted to run between Bristol Parkway and Portsmouth Harbour.

Transport for Wales

Throughout the day buses will replace trains  Cwmbran / Ebbw Vale Town / Cheltenham Spa / Gloucester / Hereford and Cardiff Central. Some buses are extended to Bridgend / Swansea.

Valley Line services through Cardiff Central will run to a revised timetable.

Check before you travel:

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

Replacement Bus Travel Advice:

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

Bicycles are not allowed on rail replacement bus services at any time, unless fully folded. More travel advice for your replacement bus journey is available by selecting the Train Operating Company you are travelling with here.