Tender For ms-vm section: construction of 3 cast - in situ rcc box syphon of size 1x1.2mx1.5m by cut and open method (bridge nos. 165a, 165b & 165c) at km 57/800-900 (at km 57@ 47 45 36 a line) below bed level of exg. bridge no.165 on deposit terms for water resources department at chengalpattu. for reclamation and rejuvenation of kolavoy lake.