This will be the prototype for the first of the photo planks, a short section of the famous sea wall berween Dawlish and Dawlish Warren. The modelled section will be a slightly telescoped rendition of the secion where the train is on the picture, with the footbridge marking one end of the scebe.
Here’s the same location from Google Earth, and with a 12″ module depth it looks as though the buildings on the upper level on the left of the picture are close enough to the tracks to be part of the scene. Not that my photo is taken with a telephoto lens shooting parallel to the coast, and those buildings are, as the above image shows, directly behind the train.