▁Road ▁was ▁the ▁second ▁of ▁Dar ling ' s ▁three ▁roads , ▁running ▁from ▁the ▁Cross ▁Ro ads ▁south ▁of ▁Liverpool ▁to ▁G oul burn . ▁It ▁comm enced ▁with ▁a ▁survey ▁in ▁ 1 8 2 9 . ▁The ▁Great ▁North ▁Road ▁to ▁the ▁Hunter ▁Valley ▁comm enced ▁in ▁ 1 8 2 6 , ▁and ▁the ▁Great ▁Western ▁Road ▁from ▁E mu ▁Pla ins ▁to ▁Bath urst ▁in ▁ 1 8 3 0 . ▁ ▁Survey or ▁General ▁Thomas ▁Mitchell ▁res ur vey ed ▁the ▁road ▁to ▁G oul burn ▁in ▁detail ▁in ▁the ▁early ▁ 1 8 3 0 s , ▁and ▁his ▁suggested ▁line ▁between ▁Lu pton ' s ▁Inn ▁and ▁G oul burn ▁was ▁adopted . ▁Const ruction ▁of ▁the ▁Great ▁South ▁Road , ▁like ▁the ▁other ▁roads , ▁was ▁slow ed ▁down ▁by ▁the ▁constant ▁res ur ve ying ▁of ▁the ▁route ▁as ▁better ▁align ments ▁were ▁identified . ▁This ▁reflected ▁the ▁limited ▁early ▁knowledge ▁and ▁expl oration ▁of ▁the ▁route . ▁The ▁Great ▁South ▁Road ▁would ▁not ▁reach ▁Y ass ▁until ▁the ▁ 1 8 5 0 s . ▁ ▁The ▁Great ▁South ▁Road ▁reached ▁Y ass ▁in ▁ 1 8 5 0 ▁and ▁then ▁continued ▁as ▁a ▁track ▁through ▁G und ag ai , ▁following ▁the ▁south ▁bank ▁of ▁the ▁M urr umb idge e ▁River , ▁through ▁Lower ▁T arc ut ta , ▁Hol bro ok ▁and ▁via ▁B own a ▁to ▁Al bury . ▁By ▁ 1 8 5 8 ▁it ▁was ▁still