When in the judgment of the board of supervisors, it is inadvisable to establish a drainage district but necessary to acquire right-of-way through private lands for the construction of ditches or drains as outlets for the drainage of highways, the board of supervisors may cause such right-of-way to be condemned by proceedings in the manner required for the exercise of the right of eminent domain as for works of internal improvement, except that no attorney fee shall be taxed, and pay the costs and expense of such condemnation from either or both of said secondary road funds.