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'''Addis System Monorail'''

[[William Judson Addis]], was the engineer to the local funds committee in [[Thana|Tannah (later named Thana and now Thane)]], a fortress town on the island of Salsette, 21 miles(34km) north of Bombay. It was also the site of the first railway to open in India with the opening of the ‘Bombay (Boribunder) to Thana’ section of the [[Great Indian Peninsula Railway]] (GIPR) on 16 April, 1853 and the [[Tannah Viaduct]] which opened in 1854.