Analysis of information sources in references of the Wikipedia article "Numbered highways in Ohio" in English language version.
...during the period from July 1, 1935 to and including June 30, 1936, the director of highways shall be and he is hereby authorized and directed to take over and add to the state highway system in the manner provided by law five thousand miles of county and township roads and highways to be selected by him, provided that such roads and highways so taken over shall at such time have a duly established right of way of a width not less than fifty feet, and provided that not less than forty miles and not more than seventy-five miles shall be taken over from each of the eighty-eight counties.