(a) The portion of Farm-to-Market Road 734 (Parmer Lane) in the city of Austin between its intersection with Metric Boulevard and its intersection with Lamar Boulevard is designated as the Master Sergeant Jonathan J. Dunbar Memorial Parkway.
(b) Subject to Section 225.021(c), the department shall:
(1) design and construct markers indicating the designation as the Master Sergeant Jonathan J. Dunbar Memorial Parkway and any other appropriate information; and
(2) erect a marker at each end of the highway and at appropriate intermediate sites along the highway.