(a) The portion of Interstate Highway 35 in Williamson County between its intersection with State Highway 45 and its intersection with Westinghouse Road is designated as the Officer Charles Whites Memorial Highway. The designation is in addition to any other designation.
(b) Subject to Section 225.021(c), the department shall:
(1) design and construct markers indicating the designation as the Officer Charles Whites Memorial Highway and any other appropriate information; and
(2) erect a marker at each end of the highway and at appropriate intermediate sites along the highway.