By 1961, the highway had been shifted westward, but a spur of the Gulf, Colorado and Santa Fe Railroad had been constructed along the approximate location of the highway's present route. On October 24, 1985, SH 168 was approved for designation by the Texas Transportation Commission (TTC), and on April 18, 1986 the highway was officially designated by the TxDOT's Administration Circle.
By 1961, the highway had been relocated westward, but a spur of the Gulf, Colorado and Santa Fe Railroad was constructed along the approximate path of the highway's present route. On October 24, 1985, SH 168 was approved for designation by the Texas Transportation Commission (TTC), and on April 18, 1986 the highway was officially designated by the TxDOT's Administration Circle.