(a) The portion of Business Interstate Highway 20-J in the municipal limits of Colorado City is designated as the James "Jim" Baum Memorial Highway.
(b) Subject to Section 225.021(c), the department shall:
(1) design and construct markers indicating the designation as the James "Jim" Baum 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.