Updated at: 23-Sep-2025 07:42:28: AM
Operator: Transport for Wales
Routes affected:
Transport for Wales between Cardiff Central and Maesteg / Swansea / Carmarthen / Milford Haven / Fishguard Harbour, and between Shrewsbury and Carmarthen
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Description of Incident
Engineering work is taking place between Cardiff Central and Bridgend, and between Bridgend and Swansea / Carmarthen, closing various lines overnight from Monday evening until Friday morning.
Monday to Thursday:
The 22:27 Cardiff Central to Carmarthen will depart 3 minutes later at 22:30 and be retimed throughout
The 22:30 Cardiff Central to Carmarthen service will depart all stations from Swansea towards Carmarthen at 23:48. The 23:48 Swansea to Carmarthen service will not run.
The 23:16 Cardiff Central to Maesteg will be replaced with a rail replacement bus, departing Cardiff Central at 23:20.
The 23:20 Cardiff Central to Carmarthen service will be diverted to run via Barry. A rail replacement bus from Cardiff Central to Bridgend, calling at intermediate stations via Pontyclun will allow passengers to connect with the train service from Bridgend onwards.
Additionally, the following trains will be diverted between Cardiff Central and Bridgend (via Barry) with extended journey times:
- 20:38 Milford Haven to Cardiff Central
- 21:46 Fishguard Harbour to Cardiff Central
- 23:20 Cardiff Central to Swansea
Tuesday to Friday:
The 04:38 Carmarthen to Swansea will be replaced by a bus throughout. Please note that this bus will run earlier than usual at 04:08 in order to maintain the onward customer connection with the Great Western Railway 05:29 Swansea to London Paddington service.
The 04:46 Carmarthen to Shrewsbury service will start from Llanelli at 05:12 – passengers from Carmarthen to Llanelli should use the 04:08 Carmarthen to Swansea bus (calls Pembrey and Burry Port at 04:38 and Llanelli at 04:53).
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.
For the very latest National Rail information click here.
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This page created on: 23-Sep-2025 07:42:28: AM