▁state ▁standards , ▁was ▁completely ▁under ▁construction ▁to ▁meet ▁said ▁standards , ▁with ▁the ▁portion ▁between ▁Marsh alls ▁Creek ▁and ▁Snow hill ▁Road ▁at ▁Tw el v em ile ▁P ond ▁being ▁completed ▁in ▁ 1 9 3 1 . ▁The ▁following ▁year , ▁ 1 9 3 2 , ▁the ▁portion ▁between ▁Tw el v em ile ▁P ond ▁and ▁US   6 ▁was ▁completed . ▁The ▁section ▁between ▁Del aware ▁Water ▁G ap ▁and ▁Marsh alls ▁Creek ▁was ▁completed ▁in ▁the ▁ 1 9 3 0 s . ▁By ▁this ▁time , ▁the ▁southern ▁termin us ▁was ▁at ▁PA   6 1 2 ▁after ▁that ▁route ▁sw apped ▁align ments ▁with ▁US   6 1 1 . ▁PA   4 0 2 ▁was ▁extended ▁south ▁along ▁P aper ▁Mill ▁Road ▁to ▁end ▁at ▁US   6 1 1 ▁( now ▁PA   6 1 1 ) ▁in ▁Del aware ▁Water ▁G ap ▁in ▁the ▁ 1 9 4 0 s ▁after ▁the ▁PA   6 1 2 ▁design ation ▁was ▁de comm ission ed . ▁By ▁ 1 9 6 1 , ▁PA   4 0 2 ▁was ▁real igned ▁to ▁use ▁River ▁Road ▁between ▁an ▁inter change ▁with ▁I - 8 0 ▁and ▁US   6 1 1 ▁in ▁Del aware ▁Water ▁G ap ▁and ▁north ▁of ▁the ▁Bro d head ▁Creek . ▁On ▁June   1 , ▁ 1 9 6 2 , ▁the ▁southern ▁termin us ▁of ▁PA   4 0 2 ▁was ▁cut ▁back ▁to ▁US  