Described as ""North Wales' most notorious road"", the A55 or the "North Wales Expressway", is a dual carriageway primary road in Britain from the M53 near Chester to Holyhead, along the North Wales coast and passing Deeside, Llandudno Junction, Conwy and Bangor. It is an economic lifeline for North Wales, and the second most important road in all of Wales, only to the M4 in South Wales. The road connects to the Port of Holyhead, which provides ferry connections to the Republic of Ireland. The majority of the road is part of the E-road network as E22 (until Ewloe), and is a dual carriageway, grade-separated, for its entire 88-mile length.