 The NBR did the same to the Marquis of Lothian's Waggonway from the South Esk bridge to Arniston, forming a through route from Edinburgh to Gorebridge, opening on 7 July 1847 for goods and a week later for passengers.A new connecting line from the new North Bridge (later "Waverley") station in Edinburgh via Portobello and Niddrie was opened at the same time, and a formal passenger train service was operated between the North Bridge station and Dalkeith.The North Bridge station was much more convenient for the city and for connecting trains, and usage of the original St Leonards terminus for passengers declined steeply