(a) The interchange of U.S. Highways 83 and 84 and Loop 322 in Abilene is designated as the Sam Waldrop Highway Interchange.
(b) The department shall design and construct memorial markers indicating the interchange number, the designation as the Sam Waldrop Interchange, and any other appropriate information.

(c) The department shall erect a marker at each end of the interchange and at appropriate intermediate sites along the interchange.