-Whenever the board of commissioners deem it advisable to construct or alter any part of any road under their supervision and can agree with the property owners affected by such change as to damages, they may, upon payment of the damages agreed upon, construct or alter such part of such public road as contemplated in such agreement without the formality of a view. The old location of the road shall be vacated in accordance with this act.
16 P.S. § 2709