Location: East St and US-412, Guymon No reassurance shield after the 412/3 split as we head out of Guymon. Location: SH-136 and Rd 2, Texas Cty Several miles later, SH-136 bears left to jog over to Texas 136 at the state line. Location: SH-136 and SH 136, Texas Cty Welcome to Texas! SH 136 continues … Continue reading Oklahoma State Highway 136, US-412/OK-3 to TX-136/TX State Line