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{{Line Railways Infobox|image=|caption= |route= [[File:Kolar District Railway.png|thumb|Kolar District Railway & Bowringpet-Kolar Railway]] to [[Chikballapur]]|gauge1= 2'''Kolar District Railway''' 6" NG|gauge1details= 63 miles (1916)|gauge2= |gauge2details= |gauge3= |gauge3details= |gauge4= |gauge4details=|timeline1date= 1916|timeline1details= Opened to traffic|timeline2date= |timeline2details=|timeline3date= |timeline3details=|timeline4date= |timeline4details= |timeline5date= |timeline5details= was a 2ft 6in/762mm narrow gauge(|presidency= [[Rail_gauge#Narrow_Gauge|NGMadras]]) from |stations= [[Bowringpet|Bowringpet (''later named Bangarapet'')]] <br>to , [[Chik-Ballapur|Chik-Ballapur (''later named Chikkaballapura'')Kolar]], a length of 63½ miles(102km) [[Chikballapur]]|system1date= 1916<ref name|system1details=Admin>Worked by [[https://archive.org/stream/BombayBarodaAndCentralIndiaRailwaySystem/Bombay_Baroda_And_Central_India_Railway_System#page/n242/mode/1up “Administration Report on Railways 1918” page 233 (pdf 242)Mysore State Railway]]; Retrieved 15 Nov 2018</ref>. |system2date=|system2details= |system3date=|system3details= }}

The first section from [[Bowringpet]] to [[Kolar]] was originally the File: Chikballapur-Bangalore City Railway Map.png| thumb|'''Bowringpet-Kolar District Railway''', 10½ miles(17km), when it opened in Dec 1913, constructed by the Mysore Durbar. It was financed entirely by the [[Kolar and Mysore District Board|District Board of Kolar]] from the proceeds of a debenture loan <ref name=Admin/>.

As the '''Kolar District Board were unable to raise the entire capital for the whole of the line Railway''' was a 2ft 6in/762mm narrow gauge([[Rail_gauge#Narrow_Gauge|NG]]) from [[Bowringpet]] to [[Chik-Ballapur]]], the cost was bourne a length of 63½ miles(102km). The line opened in equal proportions both by the from [[Kolar and Mysore District BoardBowringpet|Mysore Durbar and the Kolar District Board - ''see separate page'']].The 52 mile(84km) extension from to [[Kolar]] via Chistamani in 1915 and to [[Chik-Ballapur]] opened in 1916, giving a total line of 63½ miles(101km)<ref name=Admin>[https://archive.org/stream/BombayBarodaAndCentralIndiaRailwaySystem/Bombay_Baroda_And_Central_India_Railway_System#page/n242/mode/1up “Administration Report on Railways 1918” page 233 (pdf 242)]; Retrieved 14 Oct 20320</ref>. * [[Bowringpet| Bowringpet (''later named Bangarapet'')]] was a connection to the metre gauge([[Rail_gauge_#Metre_Gauge|MG]]) ‘[[Madras and Southern Mahratta Railway]]’(M&SMR).*[[Chik-Ballapur|Chik-Ballapur (''later named Chikkaballapura'')]]] was a connection to the NG ‘[[Chikballapur-Bangalore City Railway]]’

The first section from [[Bowringpet]] to [[Kolar]] was originally named the '''[[Bowringpet-Kolar Railway]]''', 10½ miles(17km), when it opened in Dec 1913, constructed by the Mysore Durbar and worked by the ‘[[Mysore State Railway]]’. It was financed entirely by the [[Kolar and Mysore District Board|District Board of Kolar]] from the proceeds of a debenture loan <ref name=Admin/>. As the District Board were unable to raise the entire capital for the whole of the line from [[Bowringpet]] to [[Chik-Ballapur]], the cost was bourne in equal proportions both by the [[Kolar and Mysore District Board]].The 52 mile(84km) extension from [[Kolar]] via Chistamani to [[Chik-Ballapur]] opened in 1916, giving a total line of 63½ miles(101km) and became the '''Kolar District Railway''' worked by the ‘[[Mysore State Railway]]’.<ref name=Admin/>. =Later Development=Other Developments==Meanwhile Simultaneous to the above the Mysore Durbar were was financing and constructing a further 2ft 6in/762mm narrow gauge extensions([[Rail_gauge#Narrow_Gauge|NG]]) extension:- *[[Chikballapur-Bangalore City Railway|Bangalore ‘Bangalore - Chik-Ballapur Light Railway Railway’ later known as the Chikballapur‘Chikballapur-Bangalore City Railway Railway’ - ''see separate page'']], NG, 38 miles(61km) connected to the ‘Kolar District Railway’ at [[Chik-Ballapur]] and thus by 1918 connected fully through to [[Bangalore]].and Much later (after 1937) the *[[Yelahaka-Bangarpet Railway|Yelahanka‘Yelahanka-Bowringpet Section’]] was created by these two joining NG lines except for the with the first 10 mile(16km) section from Bangalore to Yelahaka.Thus forming the [[Yelahaka-Bangarpet Railway, later known as |‘ Yelahaka-Bangarpet Railway Railway’ - ''see separate page'']]