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<br>* The 'Badapur-Lumdig Section II' included the [[Mailongdisa Trestle Viaduct|'Mailongdisa Trestle Viaduct' ''- see separate page'']] which experienced several failures and replaced by a reinforced concrete barrel in 1936. By the end of Apr 1901 track had been laid 36 miles(58km) north from [[Badarpur]] and 40 miles(64km) south from [[Lumding]]. Track was laid throughout Section III ib May 1903 when goods trains started running. The line opened to passenger traffic on 16 Feb 1904 <ref name =RC01/>.
→Survey and Construction: link to Mailongdisa Trestle Viaduct added
<br> The Imperial Gazetteer <ref>[http://dsal.uchicago.edu/reference/gazetteer/pager.html?objectid=DS405.1.I34_V06_084.gif “mperial Gazetteer of India”, v. 6, p. 78]; Retrieved 20 Dec 2017</ref> gives the following account:-
''“This section runs through shale of the worst description, often intermixed with bands of kaolinite, which swells when exposed and causes heavy slips, or exerts immense pressure on the sides of tunnels. To counteract this pressure, very heavy masonry was required, cuttings had to be arched in, and special measures taken to allow drainage to escape. Though the hill section was only 113 miles in length, it container 24 tunnels, 7 covered ways, and 74 major bridges, the longest being 650 feet, and the highest 113 feet above the river bed; while many of the banks and cuttings approach 100 feet in height and depth respectively. Apart from the special engineering difficulties, great inconvenience was experienced owing to the absence of local labour and food-supplies, and to the unhealthiness of the country traversed. At one time, in addition to the railway materials, food for more than 25,000 men had to be carried into the hills on elephants, bullocks, ponies and other pack animals. The result is that the cost of construction of the hill section has been extremely heavy.”''
==Development of the ABR==
