
Carstairs Junction remodelling
Carstairs Junction remodelling
Major engineering works on West Coast main line 4th March - 4th June 2023. Visit National Rail enquiries for journey information.
Investing to improve cross-border reliability
We are delivering major improvement work to the railway junction at Carstairs as part of a Scottish Government investment of more than £160m .
Carstairs Junction is a key section of the West Coast Mainline linking Glasgow and Edinburgh to London.

This work includes re-configuring and renewing the existing track, along with associated signals and overhead lines
There will also be improvements to Carstairs station platform
The entire project is due to be completed by spring 2024.
Project Timeline
Possible Disruptions
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Service information during Carstairs junction work 4th March to 4th June
The closure of the junction will affect cross-border operators including, Avanti West Coast, Caledonian Sleeper, CrossCountry Trains, London North Eastern Railway and TransPennine Express, who will be operating via diversionary routes or offering alternative journey options during this time.
Services operating on the East Coast main line during this time are also likely to be busier than normal.
There will be no ScotRail services to or from Carstairs for the full three-month period. ScotRail will run a range of alternative journey options throughout with Carstairs station re-opening on Tuesday May 30.
Project Updates
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23 May - Project prepares to reopen Carstairs station
Carstairs station is set to reopen to passengers on Tuesday May 30 following the successful completion of engineering work across the junction and at the station itself.
You can read more about it here
Carstairs platform works -
21 April - Direct weekday services resume on West Coast Mainline
Direct weekday services between Glasgow and Carlisle will resume on Monday (April 24) following completion of the latest phase of the £164m project to upgrade Carstairs junction on the West Coast main line (WCML).
You can read more about it here
Carstairs gantry lift -
17 March - First phase of Carstairs Junction remodel nearing completion
Passengers are being advised of changes to their journeys as the first phase of work to upgrade Carstairs Junction nears completion
You can read more about it here
Carstairs South aerial -
15 Feb - Project prepares for significant phase of work
Due to the scale of the work being delivered at Carstairs Junction, there will be some disruption to passenger and freight services on the West Coast main line between 4 March and 4 June.
Initially the line will be fully closed for 16 days. Following this there will be a period where services will operate via diversionary routes on week days with the Junction fully closed at weekends.
The last phase of work will see normal operation on weekdays and full closure on weekends.
We have worked with the train operators to plan this work and support altered service during the closure of the Junction.
Carstairs junction Details of your journey during this time can be found via www.nationalrailenquiries.co.uk or direct from your individual train operator.
Key dates
4 - 19 March - 16 day closure of the West Coast main line
20 March - 21 April Part of the junction will reopen allowing some trains to run to Edinburgh on week-days only and via diversion routes to Glasgow with extended journey times.
22 April - 4 June Services will operate normally weekdays but all lines will be fully closed each weekend.
No services will run to/from Carstairs from 4 March until 30 May.
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13 Jan 2023 - Parking restrictions for Carstairs
Avanti train going through Carstairs Residents of West View, Carstairs are being asked for their cooperation
Parking restrictions will be in place on West View, #Carstairs on Saturday 14th January from 4pm and will run overnight until 8am on Sunday morning. This is to enable the movement of pre-cast track panels through the village on low loaders.
A number of vehicles will be on the move between Lanark and Carstairs overnight carrying the panels before being off-loaded by crane and stored track-side in preparation for the significant Junction remodelling taking place from March.
Deliveries and unloading will be ongoing overnight and we will do what we can to minimise noise and disruption.
Thank you for your patience.
Why?
Carstairs junction is complex and requires regular maintenance work. Speed restrictions are often imposed which have a detrimental impact on passengers’ journeys and operational performance.
The investment focuses on making improvements to what matters most to passengers and freight users – targeting improvements in punctuality, reduction in overall journey times and improvement of infrastructure reliability.
What will change?
The renewed track, signalling and overhead electrification will improve punctuality, infrastructure reliability and line speeds on the west coast main line and on routes between Glasgow and Edinburgh via Carstairs. Our new flexible layout will also include a freight loop to accommodate longer trains.
What innovations will the project provide?
As part of the new railway infrastructure, we are building the biggest freight loop in Scotland. When complete this will be capable of holding a train 775 metres long.
Other modernisations to the junction include a new power supply which allows us to switch off the overhead lines remotely to allow us to carry out maintenance more efficiently and reduce the amount of time the railway is closed.