Complex sentence: Highway 140 begins at Highway 3 on the eastern edge of Port Colborne, which it continues south of as a local road named Elizabeth Street, and travels north, paralleling the Welland Canal to the west.
Split into simpler sentences: Highway 140 begins at Highway 3 on the eastern edge of Port Colborne. The roadway carrying Highway 140 continues south of Highway 3 as a local road named Elizabeth Street, and Highway 140 travels north, paralleling the Welland Canal to the west.