 The opening was marked by a four-day feast and Eisteddfod celebrating the roadway connecting Caernarfonshire to Meirionnydd and which figured in Madocks's plans for a road from London to his proposed port at Porthdinllaen.Three weeks later, however, the embankment was breached by high tides and Madocks's supporters were forced to drum up money and men from all around Caernarfonshire to repair the breach and strengthen the whole embankment.By 1814 it was open again, but Madocks's finances were in ruins.