Construction of balance work of four lane road over bridge (2 x 39.62m long open web through type steel girder + 2x20.00m long rcc t-type beam for two lanes of rob and 2 x 39.62m + 1 x 20.00 m rcc t type beam for other two lanes of rob) near mumbra bye pass flyover at km 38.88 (highway chainage 133/800 of nh 4) including fabrication of balance steel girder parts, assembling & launching of steel girders, construction of approaches including earth filling, re-grading existing road work, dismantling old road over bridge, etc from km. 38.20 to km. 39.20 and other miscellaneous works in connection with provision of 5th and 6th line between thane and diva stations of central railway(mutp-ii).