 This abstracted much export traffic from traditional ports and docks.The Caledonian Railway built a connecting line from the LD&R line in anticipation of this.Because the line was on viaduct at the locality, the branch diverged from the main line further east, at Scotstoun, and ran north of Dumbarton Road, crossing back under the road and the L&DR main line west of the Yoker - Renfrew Ferry and Kelso Street.