Highway Designation File

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


Certified Mileage (Open to Traffic)
124.182 2010

INTERSTATE HIGHWAY NO. 27

DOT Letter dated 12/24/1968; Adm. Cir. 08-1969, dated 02/01/69.

From a junction with IH 40 in Amarillo to Lubbock. New Designation



DOT Letter, 12/19/75; Adm. Cir. 005-1976, 01/15/76

From a junction with IH 40 in Amarillo southward to a connection with SL 289 south of Lubbock. (Potter, Randall, Swisher, Hale, and Lubbock Counties) Extended from SL 289 north of Lubbock southward to SL 289 south of Lubbock.


[Marshall Formby Memorial Hwy - IH 27 between IH 40 in Amarillo to US 84 in Lubbock. Acts 2005, 79th Leg., ch. 851, 1, eff. Sept. 1, 2005]