Whenever the planning commission shall have adopted a comprehensive plan, no new street, square, park or other public way, grounds or open space or public building, structure or public utility, whether publicly or privately owned, shall be constructed or authorized in the political jurisdiction of the governing authority or authorities establishing said planning commission until the location, character and extent thereof shall have been approved by the commission. In case of disapproval, the commission shall communicate its reasons to the governing authority or authorities it serves, which shall have the power to overrule such disapproval by the recorded vote of not less than two thirds of its entire membership. But if authorization or financing of the proposed public way, ground, space, building, structure or utility within such jurisdiction does not, under the law, fall within the province of the local planning commission's governing authority or authorities, then the governmental entity having such jurisdiction shall request approval by the local planning commission. In case of the disapproval by the local planning commission, it shall communicate its reasons to its governing authority or authorities with recommended actions to be taken. Failure of the planning commission to act within sixty days from and after the date of official submission to it shall be deemed approval.