▁Altern ate . ▁By ▁the ▁beginning ▁of ▁ 1 9 4 8 , ▁the ▁southern ▁branch ▁of ▁SR   8 ▁was ▁red es ign ated ▁as ▁SR   8 ▁Altern ate . ▁By ▁the ▁middle ▁of ▁ 1 9 5 4 , ▁SR   8 ▁Altern ate ▁was ▁red es ign ated ▁as ▁SR   1 6 6 ▁from ▁the ▁Alabama ▁state ▁line ▁to ▁n ortheast ▁of ▁Car roll ton ) ▁and ▁SR   6 1 ▁from ▁there ▁to ▁Villa ▁Rica . ▁ ▁He fl in – V illa ▁Rica ▁alternate ▁route ▁ ▁U . S . ▁Route   7 8 ▁Altern ate ▁( US   7 8 ▁Alt .) ▁was ▁an ▁alternate ▁route ▁of ▁US   7 8 ▁in ▁n ortheast ▁Alabama ▁and ▁north west ▁Georgia . ▁It ▁compr ised ▁the ▁current ▁length ▁of ▁Alabama ▁State ▁Route   4 6 ▁( SR   4 6 ) ▁from ▁He fl in , ▁Alabama , ▁to ▁the ▁Georgia ▁state ▁line , ▁SR   1 6 6 ▁from ▁the ▁state ▁line ▁to ▁Car roll ton , ▁and ▁SR   6 1 ▁from ▁Car roll ton ▁to ▁Villa ▁Rica . ▁ ▁The ▁road ▁that ▁would ▁eventually ▁become ▁US   7 8 ▁Altern ate ▁was ▁established ▁in ▁ 1 9 2 0 ▁as ▁part ▁of ▁SR   3 4 ▁from ▁Car roll ton ▁to ▁Villa ▁Rica . ▁By ▁the ▁end ▁of ▁the ▁third ▁quarter ▁of ▁ 1 9 2 1 , ▁SR   1 6 ▁was ▁designated ▁from ▁the ▁Alabama ▁state ▁line , ▁west ▁of ▁Bow don