It shall be the duty of the contractor or other party having charge of the construction of any pavement in any street in the City to place a fence or other barrier at each end of the street, or such part thereof that is being improved, and at the intersection of all streets opening thereon, and to place upon such fences or other barriers notices that the streets upon which the improvements are being made are closed to public travel.
(R.O. 1946, C. 31, Sec. 24.)