sentences:  The current port of entry opened in 1978.This existing link is also expected to someday be paralleled further west between Vermont and Québec, with an expected cross-border linkup between Interstate 89 — which already ends at the international border at the Highgate Springs–St.Armand/Philipsburg Border Crossing; and Quebec Autoroute 35, via the Autoroute's planned extension to the international border.