Highway Designation File

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


Certified Mileage (Open to Traffic)
14.125 2010

BUSINESS INTERSTATE HIGHWAY NO. 40-D

Minute Order 090905, dated 10/25/1990; Adm. Ltr. 001-1991, dated 01/14/1991

From IH 40 eastward and northwestward via Amarillo, and then concurrent with US 60 in Amarillo for approximately 10.8 miles, and then southeastward to IH 40; a total distance of approximately 24.4 miles. (Potter and Carson Counties)  As requested by district, mileage transferred from SL 552.