(a) The portion of Business United States Highway 287 in the municipal boundaries of Amarillo is designated as the L. P. "Pete" Gilvin Memorial Highway.
(b) The department shall design and construct memorial markers indicating the highway number, the designation as the L. P. "Pete" Gilvin Memorial Highway, and any other appropriate information.
(c) The department shall erect a marker at each end of the highway and at appropriate intermediate sites along the highway.
(d) In this section, a reference to the municipal boundaries of Amarillo means those boundaries as they exist on May 1, 2001.