Network Rail will be doing track renewal and essential drainage works in the Severn Tunnel in July.
As a result, no trains will run between Bristol and South Wales from Wednesday 3 July to Thursday 18 July, as well as the weekend of Saturday 27 and Sunday 28 July.
Services between London and South Wales will be diverted via Gloucester and as a result these services won’t stop at Bristol Parkway. A limited number of trains will be running between Bristol Parkway and London Paddington in the morning and the evening only. Services from Portsmouth and the South West which usually run to Cardiff Central will instead terminate at Bristol Parkway.
There will only be a very limited rail replacement bus service in place between Bristol Parkway and Severn Tunnel Junction during this closure. Customers wishing to travel between South Wales and Bristol should instead travel on trains via Gloucester, where services will continue to run to both Bristol and South Wales.
Valid tickets between the South West, Bristol and South Wales will be accepted via Gloucester. Journey times are extended by around 30 minutes.
Transport for Wales and CrossCountry train services to/from South Wales via Gloucester or Cheltenham Spa remain largely unaffected by this closure, but Network Rail would still advise checking all journeys before travelling.
More information on the works and the impact on service is available at www.gwr.com/bristol.