The earliest post road followed the route of the present day High Marsh Road. The Trans-Canada Highway (as it is now known) ran straight through the town until a bypass was built in 1962. The provincial border at the Missaguash River bridge is the dividing line between Nova Scotia Highway 104-Nova Scotia Trunk 2 and New Brunswick Highway 2. This highway forms one of the two main surface transportation links between the two provinces. The Mount Whatley Road runs between Mt. Whatley, New Brunswick and Fort Lawrence, Nova Scotia. CN Rail's mainline between Halifax and Montreal runs through Sackville, parallel to the Trans-Canada Highway. The Sackville railway station, still in active use with Via Rail, is designated a national historic place.