A55 road

A55
North Wales Expressway
Looking eastbound at junction 40 near Chester
Route information
Part of E22
Maintained by National Highways (England) North and Mid Wales Trunk Road Agent
Length	87 mi (140 km)
Existed	1922–present
History	Completed: 2001
Major junctions
West end	Holyhead
Major intersections	J9 → A487 road J11 → A5 road J19 → A470 road J33B → A494 road J34 → A494 road J38 → A483 road / J39 → A41 road/A5115 road J40 → A51 road M53 motorway (J12)
East end	Chester
Location
Country	United Kingdom
Counties	Anglesey, Gwynedd, Conwy, Denbighshire, Flintshire, Cheshire
Primary destinations	Holyhead Bangor Conwy Chester
Road network
Roads in the United Kingdom Motorways A and B road zones
← A54 → A56

The A55, also known as the North Wales Expressway (Welsh: Gwibffordd Gogledd Cymru),^[1] is a major road in Wales and England, connecting Cheshire and North Wales. The vast majority of its length from Chester to Holyhead is a dual carriageway primary route, with the exception of the Britannia Bridge over the Menai Strait and several short sections where there are gaps in between the two carriageways. All junctions are grade separated apart from a roundabout east of Penmaenmawr and another nearby in Llanfairfechan. Initially, the road ran from Chester to Bangor. In 2001, it was extended across Anglesey to the ferry port of Holyhead parallel to the A5. The road improvements have been part funded with European money, under the Trans-European Networks programme, as the route is designated part of Euroroute E22 (Holyhead – Leeds – Amsterdam – Hamburg – Malmö – Riga – Moscow – Perm – Ekaterinburg – Ishim).