The route was designated on December 22, 1936 from Port Lavaca to Inez. On September 26, 1939, it was extended to Seadrift, replacing a portion of SH 27.
On December 22, 1936, the route between Port Lavaca and Inez was designated. By September 26, 1939, this path was extended to Seadrift, taking over from a section of SH 27.