, ▁the ▁four ▁high ways ▁curve ▁to ▁the ▁sout heast ▁and ▁pass ▁the ▁Washington – Wil kes ▁Historical ▁Museum . ▁US   7 8 ▁Bus ./ SR   1 0 ▁Bus ./ SR   1 7 ▁Bus ./ SR   4 7 ▁intersect ▁East ▁Street , ▁which ▁leads ▁to ▁Washington – Wil kes ▁Element ary ▁School . ▁They ▁continue ▁to ▁the ▁sout heast , ▁before ▁intersect ing ▁US   7 8 / US   3 7 8 / SR   1 0 / SR   1 7 . ▁At ▁this ▁intersection , ▁US   7 8 ▁Bus ./ SR   1 0 ▁Bus ./ SR   1 7 ▁Bus . ▁end , ▁while ▁SR   4 7 ▁continues , ▁concurrent ▁with ▁the ▁beginning ▁of ▁US   3 7 8 ▁( Lin col nt on ▁Road ). ▁US   7 8 ▁Bus . ▁is ▁not ▁part ▁of ▁the ▁National ▁Highway ▁System , ▁a ▁system ▁of ▁road ways ▁important ▁to ▁the ▁nation ' s ▁economy , ▁defense , ▁and ▁mob ility . ▁ ▁In ▁ 1 9 7 0 , ▁US   7 8 ▁and ▁SR   1 0 ▁were ▁rout ed ▁along ▁SR   1 0 ▁Loop ▁in ▁the ▁northern ▁part ▁of ▁Washington , ▁with ▁the ▁former ▁routing ▁becoming ▁US   7 8 ▁Bus . ▁( and ▁pres umably ▁SR   1 0 ▁Bus .). ▁In ▁ 1 9 8 6 , ▁SR   1 0 ▁Loop ▁was ▁de comm ission ed . ▁ ▁South ▁Carolina ▁ ▁A iken ▁tr uck ▁route ▁ ▁U