 By 1836 the Ffestiniog Railway had opened its line across the embankment and it was to become the main route for Ffestiniog slate to reach the new port at Porthmadog.In 1927 the Cob was breached again, and took several months to repair.In 2012, 260 metres of the embankment were widened on the seaward side of the Porthmadog end to allow a second platform to be constructed at the Ffestiniog & Welsh Highland Railway's Harbour Station.