Tex. Transportation Code § 225.040

(a) The following highways and any portion of a highway in a corridor on two miles of either side of the center line of the highway are designated as La Entrada al Pacifico Corridor:

(1) State Highway 349 from Lamesa to the point on that highway that is closest to 32 degrees, 7 minutes, north latitude, by 102 degrees, 6 minutes, west longitude;

(2) the segment or any roadway extending from the point described by Subdivision (1) to the point on Farm-to-Market Road 1788 closest to 32 degrees, 0 minutes, north latitude, by 102 degrees, 16 minutes, west longitude;

(3) Farm-to-Market Road 1788 from the point described by Subdivision (2) to its intersection with Interstate Highway 20;

(4) Interstate Highway 20 from its intersection with Farm-to-Market Road 1788 to its intersection with United States Highway 385;

(5) United States Highway 385 from Odessa to Fort Stockton, including those portions that parallel United States Highway 67 and Interstate Highway 10; and

(6) United States Highway 67 from Fort Stockton to Presidio, including those portions that parallel Interstate Highway 10 and United States Highway 90.

(b) The department shall design and construct commemorative markers to be placed along the corridor indicating the highway number, its designation as the future route of La Entrada al Pacifico Corridor, and any other appropriate information.

(c) The department shall erect a commemorative marker at each end of the memorial highway and at intermediate sites along the highway that the department determines are appropriate.