In 1925, there was local agitation to extend electrification from Frankston railway station to Mornington,[3][4] which was rejected as being unprofitable[5] Between 1920 and 1930, Rail Motor Stopping Place (RMSP) 16 was situated at the level crossing over the Nepean Highway (known as the Point Nepean Road at the time) in Mornington, but had been closed by 1940.

[6] Between 1930 and 1940, Mornington Racecourse station was opened on the Melbourne side of RMSP 16, approximately halfway to Moorooduc.

Between 1960 and 1970, Mornington Racecourse was renamed to Tanti Park and, between 1970 and 1980, RMSP 16 was reopened,[6] consisting of two small passenger platforms, one on each side of the Nepean Highway.

[citation needed] In the wake of the Lonie Report in 1981, VicRail prepared to abandon many passenger services and close many stations, including the Mornington line.

The train departed from Mornington at 1:23 pm that day, but suffered engine problems, requiring the use of a replacement bus service.

The line remained disused until 1989 when the termite infested Mornington station building was abruptly demolished.

They restored a Victorian Railways K class steam locomotive and, in 1991, leased the line between Baxter and Nepean Highway.