During 2027 a lot of engineering work is scheduled for Crewe Railway Station (mainly for station roof repairs), which will affect all services on the West Coast Main Line (London to Scotland), to the East Midlands from Crewe (via Derby), for Chester and North Wales, and the Manchester to Cardiff and West Wales route via Shrewsbury.
Through services to Scotland will be able to be diverted via the so called Independent Lines (a route which avoids the station, although may have to be thinned out). Otherwise there will be a major rail replacement buses programme.
Coming from London to North Wales and Chester it may be that the best route is via Birmingham/Wolverhampton then Shrewsbury.
Details of these buses and of amended rail schedules will be announced much closer to the date.
However, for general planning, these are the currently scheduled dates (derived from public data on the Network Rail website)-
Sat 13th to Sun 21st Feb, full station closure (also Crewe to Stockport closure for other work on Sundays 14th and 21st Feb)
Sun 28th Feb & 21st March, full station closure
Sat 1st to Mon 3rd May and Sat 8th to Sun 9th May- Unrelated Closure around Warrington Bank Quay
Sun 9th May, full station closure
Mon 31st May to Fri 4th June, 5 day full station closure
Sat 5th June to Fri 27th Aug, platform 6 (main northbound line) / down slow line closed for 3 months- services diverted to other platforms or retimed
Sun 20th June, Sun 27th June, Sun 11th July, Sun 18th July, Sun 25th July, all these Sundays are morning closures until 1240 for platforms 1-6 including Up & Down fast
During the Sunday closures above and from Sat 10th July to Tues 20th July the Marches line to Shrewsbury will be closed for other work.
Mon 26th July to Thur 5th Aug, 11 day full station closure
Sun 15th Aug, full station closure
Sun 29th Aug, full station closure
Mon 30th Aug to Fri 26th Nov, platform 5 (main southbound line) / up slow closed for 3 months-- services diverted to other platforms or retimed
Sat 4th to Sun 5th Sep, unrelated weekend closure near Warrington Bank Quay
Sat 16th and Sun 17th September- closures in the Chester area for signalling recontrol
Sun 19th Sep, 26th Sept, 3rd Oct, all Sunday morning closure until 1240 for platforms 1-5 (the southbound and East Midlands lines)
Sun 10th Oct, full station closure
Sun 17th Oct, Sunday morning closure until 1240 for platforms 1-5