1942, on which date the working was taken over by the government and it became part of the Indian State Railway system, directly under the Railway Board. Construction and opening The section from Churchgate to Ahmedabad was opened in stages between 1860 and 1870. The original Bombay terminus was at Grant Road, subsequently extended to Churchgate in 1870 and to Colaba, at the southern tip of the island of Bombay, in 1873. After the new Bombay Central station was opened in 1930, the line between Churchgate and Colaba was closed and removed. The section from Godhra to Nagda was opened in 1896 and extended to Baroda. Nagda to Muttra Junction was opened in 1909, making possible through broad-gauge running between Bombay and Delhi. The metre-gauge system was originally the Rajputana Malwa State Railway and was taken over subsequently by the BB&CI. The metre-gauge main line from Delhi to Jaipur was completed in 1874, extended to Ajmer in 1875 and to Ahmedabad in 1881. The branch from Rewari to Bhatinda and Fazilka was begun in 1881 by the Ferozepore & Rewari Railway, but the section between Bhatinda and Ferozepore was subsequently built to the broad-gauge and passed to the GIPR. Electrification The Colaba-Borivali section (37.8 km) was electrified on 5 January 1928 on the 1.5 kV DC system. The two tracks between Colaba and Grant Road stations were electrified, while four tracks between Grant Road and Bandra railway stations were electrified. 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. Locomotives and rolling stock By the end of 1877 the company owned 77 steam locomotives, 295 coaches and 2,644 goods wagons. At the end of 1910 there where 7272 goods wagon. In 1936 the BB&CI owned 833 locomotives, 43 railcars, 1963 coaches and over 20.000 goods wagons. In 1947, the total numbers of broad-gauge locomotives in service were 363 steam, 10 diesel and 2 electric. There were 1,042 passenger coaches (including 40 electric motor and 120 electric trailer coaches) and