Highway Designation File

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


Certified Mileage (Open to Traffic)
284.913 2010

INTERSTATE HIGHWAY NO. 45

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

From Galveston via Houston to a junction with IH 20 in Dallas. New Designation



Minute Order 065684, dated 12/02/1971; Adm Cir 125-1971, dated 12/15/1971

From Galveston via Houston to junction with IH 30 in Dallas. (Galveston, Harris, Montgomery, Walker, Madison, Leon, Freestone, Navarro, Ellis, and Dallas Counties)  Northern terminus redescribed due to portion of IH 20 being redesignated IH 30.