 Only two suburban tracks between Bandra and Borivali were electrified in 1928, two main tracks were left for the steam locomotives.In 1933, Colaba railway station and two electrified tracks between Colaba and Churchgate railway stations were dismantled.In 1936, electrification was extended to the two main tracks between Bandra and Borivali railway stations, left earlier and the two main tracks between Borivali and Virar railway stations were also electrified, resulting in completion of the electrification of the Churchgate-Virar section.