Highway Designation File

Transportation Planning and Programming Division
Current Description-Effective Date-Authority


Certified Mileage (Open to Traffic)
177.139 2010

INTERSTATE HIGHWAY NO. 40

Approved BPR, dated 10/01/1959; Adm Cir 180-1959, dated 10/16/1959

From the Texas/New Mexico State Line near Glenrio via Amarillo to the Texas/Oklahoma State Line east of Shamrock. (Deaf Smith, Oldham, Potter, Carson, Gray, Donley, Gray, and Wheeler Counties) New Designation