Whenever a township, county, or the department shall construct, improve, or repair any road, culvert, or bridge, or shall gravel any road, and such work renders travel on such road, culvert, or bridge unsafe or dangerous, the board of supervisors of any such township, the board of county commissioners of any such county, or the director or any foreman or other person in charge of such work, shall place such warning signs as provided in section 24-03-09.
N.D.C.C. § 24-03-10