Highway Designation File
Transportation Planning and Programming Division
Current Description-Effective Date-Authority
STATE HIGHWAY LOOP NO. 556
Minute Order 082999, dated 04/18/1985; Adm. Ltr. 008-1985, dated 08/19/1985
Shamrock Loop - From IH 40, west of Shamrock, eastward approximately 2.8 miles to IH 40, east of Shamrock. (Wheeler County) New designation; mileage transferred from old location of US 66.
Minute Order 102078, dated 03/24/1993; DesLtr 03-1993, dated 05/10/1993
Cancelled. (Wheeler County) As requested by District,
mileage transferred to BI 40-J.
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125 East 11th Street • Austin, Texas 78701
125 East 11th Street • Austin, Texas 78701