after . ▁ ▁Between ▁ 2 0 0 6 ▁and ▁ 2 0 0 8 , ▁Highway   4 0 1 ▁was ▁w iden ed ▁from ▁four ▁to ▁six ▁lan es ▁between ▁Highway   4 0 2 ▁and ▁Well ington ▁Road ▁in ▁London . ▁This ▁included ▁replacing ▁the ▁original ▁Well ington ▁Road ▁over pass . ▁In ▁O sh awa , ▁exit   4 1 6 ▁( P ark ▁Road ) ▁was ▁replaced ▁by ▁a ▁new ▁inter change ▁at ▁exit   4 1 5 ▁( Ste vens on ▁Road ). ▁The ▁contract , ▁which ▁began ▁September ▁ 7 , ▁ 2 0 0 5 , ▁included ▁the ▁inter change ▁and ▁the ▁res ur f acing ▁of ▁ ▁of ▁the ▁highway ▁between ▁O sh awa ▁and ▁. ▁The ▁west bound ▁ram ps ▁were ▁opened ▁in ▁mid - Se ptember ▁ 2 0 0 7 ▁and ▁the ▁east bound ▁ram ps ▁in ▁mid - 2 0 0 9 . ▁The ▁res ur f acing ▁was ▁completed ▁mid - 2 0 1 0 . ▁ ▁In ▁November ▁ 2 0 1 0 , ▁the ▁w iden ing ▁of ▁Highway   4 0 1 ▁from ▁four ▁to ▁six ▁lan es ▁between ▁Wood stock ▁and ▁K itch ener ▁was ▁completed ▁after ▁many ▁years ▁of ▁planning ▁and ▁construction . ▁The ▁project ▁included ▁the ▁installation ▁of ▁a ▁tall - wall ▁median ▁bar rier , ▁straight ening ▁curves ▁and ▁adding ▁additional ▁inter changes ▁on ▁the ▁fre ew ay , ▁allowing ▁it ▁to ▁be ▁easily ▁vac ated ▁in ▁an ▁emer gency ▁event .