 I @-@ 87 takes a northerly track from US 11 , crossing the Great Chazy River and briefly entering the village limits , where it runs past a series of homes and businesses built up along nearby US 9 . As both roads head north out of the village , US 9 connects to the Northway one last time at exit 43 , the last interchange on I @-@ 87 before the Canadian border . Past the exit , the highway doubles in width , becoming eight lanes wide as it begins to run past the customs facilities on the American side of the border . The Northway and I @-@ 87 end shortly thereafter at the Canadian border , where the highway continues past the Champlain @-@ St. Bernard de Lacolle Border Crossing into Quebec as A @-@ 15 . 
