den/south/sbc sec : salem - bengaluru section : proposed construction of rub in lieu of lc no. 48 at km 73/900-74/000 by rcc box between dharmapuri (dpj) - palakkodu (pcv) stations in aden/dharmapuri sub-division. rcc box of size 1 x 7.0 x 4.50m (barrel length = 13.7m) by rolling/launching method in aden/dharmapuri sub-division. maintenance period is 4 years