As the name suggests, washdowns are places where the engines get cleaned and polished. The first was introduced in the third season, situated near Tidmouth Sheds. This later moved to the Repair Yard. Another was later seen at Maron station. In the ninth season, there was one beside Knapford and in the tenth season, there was one at Kellsthorpe. Then there was one with a single-road shed and a water column, situated just off the main line in the twelfth season, and carried on in this form throughout the CGI Series. This washdown is located between Crosby and Crosby Tunnel.