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The '''Bukhtiarpur-Bihar Light Railway''' (BBLR) was a short, 2ft 6in/762mm narrow gauge([[Rail_gauge#Narrow_Gauge|NG]]) branchline which connected the city of [[Bihar|Bihar (Bihar Sharif)]] to the [[East Indian Railway]](EIR) at [[Bukhtiarpur]] and opened in 1903. The line was later extended from [[Bihar]] to [[Rajgir]] in 1911 giving a line length of 62 33 miles <refname=Wiki>[https://en.wikipedia.org/wiki/Bakhtiyarpur%E2%80%93Tilaiya_line Wikipedia “Bakhtiyarpur–Tilaiya line”]; Retrieved 15 Mar 201928 Jul 2020</ref>.

The Bukhtiarpur-Bihar Light Railway Company owned the railway and was assisted by the District Board of Patna. It was one of several small narrow gauge concerns worked by [[Martin's Light Railways]](MLR), a management company based in [[Calcutta]].<ref>[https://archive.org/stream/BombayBarodaAndCentralIndiaRailwaySystem/Bombay_Baroda_And_Central_India_Railway_System#page/n226/mode/1up " Administration Report on the Railways in India – corrected up to 31st March 1918"; Superintendent of Government Printing, Calcutta; page 218]; Retrieved 15 Mar 2019</ref>

The ‘Statistics of Working’ show the year-by-year financial results from 1913-14 through to 1936-37 <ref name=Hist1937>[https://ia801605.us.archive.org/30/items/in.ernet.dli.2015.36650/2015.36650.India-Railway-Board-History-Of-Indian-Railways-Constructed-And-In-Progress.pdf US Archive .org pdf download of ‘History Of Indian Railways, constructed and in progress’, 31 March 1937 by ‘The Government of India - Railway Department’ page 269 pdf 312]; Retrieved 27 Jul 2020</ref>. == Classification ==[[Indian Railway Classification]] of 1926 - Class III railway system. ==Later Development==The line was taken over by the local district board in 1950. In 1962, the track was acquired by [[Indian Railways]], converted to broad gauge and re-opened to trafficref name=Wiki/>.