 Highway 140 begins at an intersection with Highway 3 on the eastern edge of Port Colborne . From there , Highway 3 continues east to Fort Erie ; to the west it becomes Niagara Regional Road 3 . The roadway carrying Highway 140 continues south of Highway 3 as a local road named Elizabeth Street , whereas Highway 140 travels north , to the west of forestland and a quarry . The highway parallels the Welland Canal throughout its length , always within 2 kilometres ( 1 @.@ 2 mi ) of the waterway . Wooden high @-@ tension powerlines parallel the highway until it diverges , curving towards the northeast immediately north of Chippawa Road . It travels diagonally for several kilometres before ascending on an overpass and crossing the former Canadian National Humberstone Subdivision tracks . 
