▁ 2 4 3 ▁( SR ▁ 2 4 3 ) ▁is ▁a ▁primary ▁state ▁highway ▁in ▁the ▁U . S . ▁state ▁of ▁Virginia . ▁Kn own ▁as ▁N ut ley ▁Street , ▁the ▁state ▁highway ▁runs ▁ ▁from ▁U . S . ▁Route ▁ 2 9 ▁( US ▁ 2 9 ) ▁and ▁State ▁Route ▁ 2 3 7 ▁( SR ▁ 2 3 7 ) ▁on ▁the ▁border ▁between ▁Oak ton ▁and ▁M err if ield ▁north ▁to ▁State ▁Route ▁ 1 2 3 ▁( SR ▁ 1 2 3 ) ▁in ▁Vienna . ▁SR ▁ 2 4 3 ▁connect s ▁Vienna ▁and ▁Fair f ax ▁with ▁Inter state ▁ 6 6 ▁( I - 6 6 ) ▁and ▁the ▁Vienna ▁station ▁of ▁the ▁Washington ▁Metro . ▁ ▁Route ▁description ▁ ▁SR ▁ 2 4 3 ▁begins ▁at ▁an ▁intersection ▁with ▁US ▁ 2 9 ▁and ▁SR ▁ 2 3 7 ▁( Le e ▁Highway ) ▁between ▁the ▁independent ▁city ▁of ▁Fair f ax ▁and ▁the ▁community ▁of ▁M err if ield . ▁N ut ley ▁Street ▁continues ▁south ▁ ▁as ▁a ▁two - lane ▁road ▁designated ▁SR ▁ 1 0 2 7 2 ▁to ▁US ▁ 5 0 ▁( Ar ling ton ▁Bou lev ard ). ▁SR ▁ 2 4 3 ▁heads ▁north ▁as ▁a ▁six - lane ▁divided ▁highway ▁through ▁a ▁clo ver leaf ▁inter change ▁with ▁I - 6 6 ▁just ▁east ▁of ▁the ▁Vienna ▁station ▁of ▁the ▁Washington ▁Metro , ▁which ▁is ▁the ▁western ▁termin us