 This opened in 1846, and it intersected the route of the waggon-way, which was provided with a bridge to carry it over the new line.Also in 1846 the North British Railway secured an Act of Parliament authorising a branch from its main line at Bankton, a little to the west, to Tranent and Windygoul; the branch line opened in 1849.The line was relaid with wrought iron rails, probably in the 1850s.