Displayed are three photos, which show the work which is currently going on at Primrose Viaduct, near Clitheroe, in preparation for the four-day possession over Christmas.
The plan is to replace the Viaduct's deck, a job, which will entail ripping up the track and ballast laid only two years ago, installing a concrete deck along the whole length, and then replacing the track, etc.
There is a massive amount of preparatory work being done, including the construction of access roads (steel sheets) on both the east and west sides, with colossal ramps on either side to gain access to the tracks.
It seems that these will enable the heavy concrete sections to be hauled up before being put in place on the viaduct.