experience on our website. If you continue, we'll assume that you are happy to receive
Timetables and travel
Our Railway's Future
Our work in the community
Railway upgrade plan
Working with us
Using our network
Retail at our stations
Why choose us
Meet our people
How to apply
Joining Network Rail
Jobs at our national centre
Training and development
Rewards and benefits
The electrification of the Great Western route requires work to the South Wales Mainline – an important route linking major towns and cities across the region
See Great Western route modernisation for information about the benefits of the project for passengers, the economy and the environment.
The South Wales Mainline runs from the Severn Tunnel in Monmouthshire, through Newport, Cardiff, Bridgend, Port Talbot, Neath and Swansea. Work began in Newport in autumn 2015 and will continue until late 2018.
South Wales electrification FAQ (2.2 MB)
We're carrying out piling work in the Newport area at various points throughout 2016 and 2017. Piling is an essential activity in the process to electrify the South Wales Mainline, as it creates the foundations for the overhead posts and wires that will power the new trains.
As part of our plan to electrify the South Wales Mainline, we have identified that a number of bridges in Newport will require modification as they are too low to accommodate the overhead wires.
Map of bridge works in Newport
The bridge will be closed to vehicles and pedestrians in November 2015 (and will remain closed until Spring 2016). An appropriate diversion is in place for road traffic and a temporary footbridge has been installed directly to the east of the bridge to maintain access for pedestrians.
As part of the project, we will also clear overgrown vegetation running alongside the railway. Find out more about how and why we manage vegetation.
We also need to carry out piling works required to install foundations for the overhead electrical lines. This work will largely take place largely over night at intervals throughout 2015 and 2016.
Work at some of the bridges is due to begin in autumn 2015, however, the bulk of work will be undertaken in late 2015 and 2016.
We recognise that work to electrify the South Wales Mainline may cause some disruption in local communities but we’ll do our very best to limit this.
Safety is our number one priority and for this reason, some of the work must be carried out while trains are not running. Also, we are contractually obliged to work at times that cause the least disruption to services. This means carrying out some of our improvement work during the night.
Alongside our partners, we will endeavour to work responsibly ensuring construction sites are managed effectively. For those living close to the railway, engineering work can be noisy – but we will try to keep disruption to a minimum, particularly at night time.
Undertaking work to bridges will require the temporary closures of roads and footpaths - but we are working closely with local councils to agree suitable diversionary routes and are committed to completing construction as quickly as possible.
Answers to your questions about electrification, the environment and more:
If you have a question about our infrastructure, call our 24 hour helpline:
03457 11 41 41
or contact us online