(a) The portion of Recreational Road 255 between State Highway 63 and U.S. Highway 96 in Jasper County is designated as Sam Rayburn Parkway.
(b) Subject to Section 225.021(c), the department shall:
(1) design and construct markers indicating the designation as Sam Rayburn Parkway and any other appropriate information; and
(2) erect a marker at each end of the road and at appropriate intermediate sites along the road.