The department shall designate the overpass on United States highway 281 between twenty-fourth street southwest and twentieth street southwest in Jamestown as the hidden wounds veterans overpass and shall place signs along the highway designating that name. The department may accept any appropriate signs or funds donated to the department for the placement of signs. Any donated funds are appropriated to the department on a continuing basis for the purpose of providing signs designating the overpass on United States highway 281 as the hidden wounds veterans overpass.