Highgate Springs–St. Armand/Philipsburg Border Crossing
The Highgate Springs–St. Armand/Philipsburg Border Crossing connects the towns of Philipsburg, Quebec with Highgate Springs, Vermont on the Canada–US border. It is also the terminus of Interstate 89 and Quebec Route 133. The crossing is the busiest of the 15 in Vermont. History. Even before construction of the 4-lane highway, this crossing was the primary route between Montreal and Boston, because it was where US Route 7 crossed into Canada. Route 7 now merges with I-89 prior to crossing the border. Upon completion of Autoroute 35 on the Canadian  side of the border, there will be a nonstop limited access highway from the second largest city in Canada to Greater Boston. The US port of entry has a new cattle inspection facility. There is a duty-free shop on the Canadian side, 3, Route 133, which services travelers leaving/entering both countries.