(a) The portion of State Highway 154 from the municipal limits of Yantis in Wood County north to the municipal limits of Sulphur Springs in Hopkins County is designated as the Sgt. Tanner Stone Higgins Memorial Highway.
(b) Subject to Section 225.021(c), the department shall:
(1) design and construct markers indicating the designation as the Sgt. Tanner Stone Higgins 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.