 In 1961 , US 33 was moved to a new alignment further south . Consequently , the SR 366 designation was applied to the former alignment of the U.S. highway . However , at the same time , SR 368 was extended east , running concurrent with SR 366 east to SR 117 north of Huntsville , where both routes arrived at a shared terminus . This remained the case until 1979 , when SR 368 was restored back to its original alignment , leaving SR 366 as the solo route between SR 368 and SR 117 . 
