Location: Harrison St and MacArthur St, Shawnee Reassurance shield after the turn. Location: Harrison St and Highland St, Shawnee A few blocks later, 3E will split to continue its trek to Ada. Location: Harrison St and Highland St, Shawnee Turn left for SH-3E east. Stay stay straight for 18, which heads south around the south … Continue reading Oklahoma State Highway 3E, OK-18 to OK-18