 This narrow gauge tramway crossed the Gorseddau on the level on the edge of Porthmadog and served the same wharves.In 1871 notice was given by the owners of the Gorseddau Tramway that they intended to replace the tramway with a new railway between Gorseddau and Porthmadog of narrow gauge.This would allow common rolling stock to be used between the Croesor and Gorseddau tramways and the Ffestiniog railway, all of which delivered slate to Porthmadog harbour.