Train services through Huddersfield face disruptions over four weekends in August due to major upgrades as part of the Transpennine Route Upgrade (TRU).
Diversionary routes and rail replacement buses will be in operation.
Services over the August bank holiday weekend will remain unaffected.
The works taking place include rewiring of cables, installation of scaffolding for Huddersfield station's roof canopy refurbishment, track renewals, and bridge repairs between Deighton and Mirfield station.
Gareth Hope, sponsor on TRU, said: "The rail upgrades for TRU have been progressing well through Huddersfield, with mining mitigation work undertaken and reinforcements to Huddersfield viaduct underway, in advance of new track being installed.
"The next stage of upgrades will see repairs starting on Huddersfield’s historic roof canopy, which is one of the few remaining ‘Euston roof’ examples on the operational railway today, as well as wider work completed along the route.
"This will enable more trains to run on a more reliable railway in the future."
Kerry Peters, regional director for Northern Trains, said: "With some trains replaced by buses, we’d advise customers to plan ahead and check before they travel.”
The upgrades form part of TRU's multi-billion-pound scheme to offer passengers faster, greener, and more reliable trains between Manchester, Huddersfield, Leeds, and York.
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