[Tolerance Sucks Rocks]

Isn't I-69 supposed to include what is now US 281, starting north from ?McAllen?

From Interstate 69 Texas:

I-69 is the combination of two federally designated High Priority Corridors. Corridor 18 extends from Michigan and Illinois south through Indiana, Kentucky, Tennessee, Mississippi, Arkansas, Louisiana and terminating at the terminus of U.S. 77 and U.S. 281 in the Rio Grande Valley of Texas. Corridor 20 is designated as U.S. 59 from Texarkana to Laredo.

Also, from aaroads.com:

Interstate 69's Three-Way Split

Interstate 69 has several southern termini planned, all of which are likely to be constructed:

• Laredo via U.S. 59 (Interstate 69)
• Rio Grande Valley via U.S. 281 (Interstate 69 Central)
• Rio Grande Valley/Brownsville via U.S. 77 (Interstate 69 East)

Note that the Laredo segment is not referred to as "Interstate 69 West." It seems like these three routes would merge someplace near Beeville or Victoria. If each segment is constructed as planned, it is possible that U.S. 59, 77, and 281 may be curtailed on their concurrent sections with the future Interstate 69 and its central and east segments.

For a map and much more details, see Texas Freeways: Interstate 69 (Erik Slotboom).

[Tolerance Sucks Rocks]

Correction:

For a map and much more details, see Texas Freeways: Interstate 69 (Erik Slotboom).