The next major milestone was the beginning of local service between Grant Rd, and Bassein Road (Vasai Rd) on 1 November 1865.
This was a necessary step, partly as a requirement to extend the line from Grant Rd southward along the proposed extension route.
The station primarily functioned as a place to run ballast trains that carried the materials for the land reclamation.
[4] The stations on this route were- Backbay, Grant Rd, Dadur, Mahim, Bandora (Bandra), Santacruz, Andaru (Andheri), Pahadee (Goregaon), Berewla (Borivali), Panjoo (Near or at Panju Island), Bassein Rd (Vasai Rd), Nial (Nallasopara) and Viraur (Virar).
The terminus was later shifted further south to a place along the road to the erstwhile Church gate of the Fort in Bombay.