Whenever the board of supervisors of any county are petitioned to by at least 12 freeholders of each of the townships through which any such road or roads may pass, they shall upon such petition authorize the commissioners of highways of such townships to cause the line of said road or roads, within their respective townships, to be surveyed and located therein, and such commissioners shall report such survey and location to the board of supervisors of their county. And upon examination of said survey and report said board may declare such road or roads duly laid out, established, discontinued, opened or altered, as the case may be.