 State Highway 168 was first proposed in 1933 , traveling from Campbellton in <unk> County northeastward to Floresville in Wilson County before bending further eastward and terminating at SH 81 . The proposal was listed as a conditional designation , meaning that it would not be maintained by the State Highway Commission . However , by 1935 , the portion traveling from Floresville to SH 81 , a distance of approximately 11 miles ( 18 km ) , was designated as a portion of SH 97 , while the rest of the proposed State Highway 168 was cancelled . On September 26 , 1939 , SH 87 was designated to a road that followed the general course of present @-@ day SH 168 . 
