Meanwhile, Mid Calder also lay on the main turnpike road from Edinburgh to Glasgow, adding a steady flow of east–west traffic to the seasonal influx of drovers heading south. However, the importance of the turnpike lessened at the same time as the cattle droving stopped, and for the same reason: the railways. And for once the acumen and foresight that had allowed the Sandilands to retain their position for so many centuries missed a beat. When the railway came to West Lothian in 1848, the then Lord Torphichen decreed that it should not come near Calder House.