Doubling of track between Thiruvananthapuram and Kanyakumari stations. Doubling of track between Thiruvananthapuram and Kanyakumari stations. Proposed reconstruction of ROB 262 as 1 x 32200 SQ ( 39801 SK ) clear span composite girder & sub- structure as pile foundation at CH: 278102 m and proposed extension of RUB 238 as 1x8500 SQ ( 10253 SK ) x6000 RCC Box @ CH: 273826m between Eraniel & Nagercoil Junction stations.