Such person must thereupon deposit the amount of such estimates, inclusive of said fee, with the Department of Public Works, the same to be paid by said department into the Side Sewer Fund. When such amount shall have been so deposited, it shall be the duty of the said department to proceed to open or tear up the roadway of such street and construct the side sewer or drain so requested, in a proper manner with approved material, and properly connect the same with the public sewer, or to reconstruct or repair the existing side sewer or drain in a proper manner under its supervision, and thereafter said department shall at the proper time restore the said roadway to as good a condition as it was in before such opening or tearing up.