Highway Designation File
Transportation Planning and Programming Division
Current Description-Effective Date-Authority
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)