Location: 15th St and SH-18, Chandler Reassurance shield after the two routes join as we enter Chandler. Location: 15th St and Manvel Ave, Chandler A few blocks later, turn left to head north into downtown. Location: Manvel St and SH-66, Chandler On the north side of Chandler, keep right for 66 east, which is the … Continue reading Oklahoma State Highway 18, OK-66 to OK-66