▁about ▁ ▁of ▁fre ew ay ▁from ▁the ▁southern ▁end ▁of ▁a ▁completed ▁segment ▁of ▁I - 7 5 ▁south ▁of ▁Gray ling ▁to ▁just ▁west ▁of ▁Ros common . ▁In ▁ 1 9 7 1 , ▁both ▁the ▁northern ▁and ▁southern ▁sections ▁of ▁the ▁M - 7 6 ▁fre ew ay ▁were ▁extended : ▁on ▁the ▁south , ▁around ▁the ▁west ▁side ▁of ▁West ▁Branch ▁to ▁M - 5 5 , ▁or ▁from ▁present - day ▁ex its ▁ 2 1 2 ▁to ▁ 2 1 5 ; ▁and ▁on ▁the ▁north , ▁on ▁the ▁west ▁side ▁of ▁Ros common , ▁from ▁present - day ▁ex its ▁ 2 4 4 ▁to ▁ 2 3 9 . ▁In ▁ 1 9 7 3 , ▁the ▁final ▁ ▁segment ▁of ▁M - 7 6 ▁fre ew ay ▁was ▁completed . ▁However , ▁the ▁entire ▁M - 7 6 ▁design ation ▁was ▁de comm ission ed ▁and ▁that ▁segment ▁of ▁fre ew ay ▁opened ▁as ▁I - 7 5 . ▁This ▁was ▁the ▁final ▁segment ▁of ▁I - 7 5 ▁to ▁be ▁completed ▁in ▁the ▁state ▁of ▁Michigan . ▁ ▁As ▁segments ▁of ▁the ▁fre ew ay ▁were ▁completed , ▁the ▁former ▁port ions ▁of ▁M - 7 6 ▁were ▁turned ▁over ▁to ▁local ▁control , ▁except ▁for ▁port ions ▁near ▁Ros common ▁and ▁West ▁Branch , ▁which ▁became ▁parts ▁of ▁Business ▁Loop ▁I - 7 5 ▁design ations . ▁There ▁are ▁several ▁places ▁where ▁these ▁old ▁port ions ▁are ▁referred ▁to ▁as ▁"