Buses will replace trains at all stops between Carmarthen and Milford Haven/Fishguard Harbour on the West Wales lines from Saturday to Tuesday 27-30 April inclusive.
Network Rail engineers will be working at Clarbeston Road station, preparing the platforms to be able to accommodate new Class 197 trains.
The work will include lowering the platforms by removing the coping stones on the platform edge, altering walls, installing new coping stones, and finally laying new tarmac surfacing.
-- Advertisement --
Nick Millington, Network Rail Wales and Borders route director, said: "These essential works will prepare Clarbeston Road station to accommodate the new Class 197 trains our colleagues at TfW are introducing.
"We're grateful to passengers and local residents living near Clarbeston Road station for their patience and understanding while we carry out this important work."
The line between Carmarthen and Milford Haven will also be shut all day on Sunday 12 May and Sunday 19 May, when buses will again replace trains, as Network Rail engineers carry out essential track renewals on a 100-metre stretch of track near Haverfordwest station.
