▁of ▁the ▁three — from ▁Jam est own ▁( exit   1 1 ) ▁and ▁Fal con er ▁and ▁between ▁Al mond ▁( 3 3 ) ▁and ▁Campbell — w ere ▁extensions ▁of ▁pre - ex isting ▁sections ▁while ▁the ▁third , ▁connecting ▁Al leg any ▁( 2 4 ) ▁to ▁H ins dale ▁( 2 7 ), ▁was ▁isolated ▁from ▁the ▁other ▁port ions ▁of ▁the ▁highway . ▁This ▁was ▁only ▁temporary , ▁however , ▁as ▁the ▁fre ew ay ▁was ▁completed ▁between ▁H ins dale ▁and ▁Bel vid ere ▁( exit   3 0 ) ▁by ▁January ▁ 1 9 7 5 ▁and ▁opened ▁to ▁traffic ▁from ▁Bel vid ere ▁to ▁Al mond ▁on ▁January ▁ 3 0 , ▁ 1 9 7 5 . ▁The ▁Southern ▁Tier ▁Express way ▁was ▁extended ▁west ward ▁to ▁B em us ▁Point ▁by ▁ 1 9 7 7 , ▁initially ▁util izing ▁what ▁is ▁now ▁NY   9 5 4 J . ▁In ▁the ▁early ▁ 1 9 8 0 s , ▁work ▁began ▁on ▁a ▁west ward ▁extension ▁to ▁the ▁vic inity ▁of ▁Er ie , ▁Pennsylvania . ▁The ▁Find ley ▁Lake – B em us ▁Point ▁( ex its   4 – 1 0 ) ▁segment ▁was ▁completed ▁by ▁ 1 9 8 5 ▁while ▁the ▁portion ▁from ▁I - 9 0 ▁east ▁of ▁Er ie ▁to ▁Find ley ▁Lake ▁was ▁opened ▁by ▁ 1 9 8 9 . ▁From ▁I - 9 0 ▁to ▁exit   8 , ▁the ▁fre ew