(a) Improvement Of Bc Road From Dirgha Up-dewlbari Up Road At Ch. 3800-5300m Including 02 Nos. 4.00mx4.50m Rcc Box Culvet At Ch.4114m & 5110m And 02 Nos. 3.00mx3.00m Rcc Box Culvet At Ch.4933m & 5013m And 03 Nos. 1.50mx1.50m Rcc Box Culvet At Ch.4452m, 48