Highway Designation File
Transportation Planning and Programming Division
Current Description-Effective Date-Authority
U. S. HIGHWAY NO. 366
Original Description per Administrative Circular 16-1944
1927 - Beginning at Amarillo via Canyon to the Texas/New Mexico State Line at Farwell. Beginning at the Texas/New Mexico State ine south of Newman to El Paso at the U.S./Mexico International Boundary.
1929 - Beginning at Amarillo 18, Canyon 77, Farwell 10, El Paso.