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Broad gauge([[Rail_gauge#Broad_Gauge|BG]]) line, first section opened 1860, completed 1865 linking [[Bombay]] via [[Surat]] and [[Baroda]] to [[Ahmedabad]], 310 miles(496km); with southerly suburban service extension reaching [[Bombay Back Bay Reclamation Scheme Railway|Bombay Backbay(Colaba) Back Bay]] in 1870 and a northerly extension in 1871 to [[Viramgam]], giving a total of 250 350 miles(560km563km). <ref>[https://archive.org/stream/BombayBarodaAndCentralIndiaRailwaySystem/Bombay_Baroda_And_Central_India_Railway_System#page/n22/mode/1up “Administration Report on Railways 1918” Page 13 (pdf 22) ]; Retrieved 4 Nov 2016</ref>