sentences:  FHWA later granted concurrence and with the final approval of the Texas Transportation Commission (TTC), the stretch was officially designated as I-69.It was announced on February 6, 2013, that FHWA had approved a segment of US 59 (Southwest Freeway) from I-610 in Houston (on the loop's western segment) to just southwest of Rosenberg, The TTC gave final approval later that month and signage was erected on April 3, 2013.The remaining segment of the original submission (the section within Houston between the northern and western sections of I-610) was approved for designation as I-69 by the FHWA on March 9, 2015, and approved for signage as I-69 by the TTC on March 25, 2015.