Question: What year was the route that is a length of about 5320 km, and has the North Wales Expressway as a designated part to it ,extended?

Context paragraphs:
Flint Mountain: Flint Mountain (Welsh: Mynydd Y Fflint) is a small village seated in Flintshire, North Wales, approximately 12 miles west of the city of Chester, midway between Mold and Flint, and situated just off junction 33 of the A55 North Wales Expressway.  Points of interest include the Coach and Horses pub, and recently developed football club Flint Mountain FC.

North–South Expressway Northern Route: The North–South Expressway Northern Route (Malay: "Lebuhraya Utara–Selatan Jajaran Utara" , ), or the Alor Setar–Penang Bridge–Kuala Lumpur Route, designated as expressway and is part of AH2 of the Asian Highway Network, is a mostly tolled, interstate controlled-access highway in Peninsular Malaysia.  The 460 km expressway forms the north section of the larger North–South Expressway, passing through the northwestern states of Kedah, Penang, Perak and Selangor.  The expressway begins at the Bukit Kayu Hitam checkpoint in Kedah where the Malaysia–Thailand border lies, and ends at Bukit Lanjan in Selangor where the expressway interchanges with the New Klang Valley Expressway.  The expressway is operated by PLUS Expressways.

A55 road: The A55, also known as the North Wales Expressway (Welsh: "Gwibffordd Gogledd Cymru") and the Chester to Bangor Trunk Road, is a major road in Britain.  Its entire length is a dual carriageway primary route, with the exception of the point where it crosses 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 except for two roundabouts — one east of Penmaenmawr and one in Llanfairfechan.  The road originally ran from Chester to Bangor but was extended parallel to the A5 across Anglesey to just outside Holyhead Docks in 2001.  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).

Northop: Northop (Welsh: "Llaneurgain" ) is a small village and an electoral ward situated in Flintshire, Wales, approximately 12 miles west of the city of Chester, midway between Mold and Flint, and situated just off junction 33 of the A55 North Wales Expressway.  At the 2001 Census, the population of Northop was 2,983, increasing to 3,049 at the 2011 census.  The community includes Sychdyn.

Afonwen: Afonwen (] ; Welsh: "Afon-wen" ) is a town in Flintshire, Wales.  It is situated just under four miles from the A55 North Wales Expressway and on the A541 Mold-Denbigh road.  At the 2001 Census, the population of Afonwen was included into the civil parish of Caerwys and was 1,319, with a total ward population of 2,496.

Pentre Halkyn: Pentre Halkyn (Welsh: "Pentre Helygain" ) is a small village in Flintshire, Wales.  It is situated approximately three miles from Holywell, and is off Junction 32 of the A55 North Wales Expressway.  It has a quarry, a small hotel, and a local shop.  The village borders on the Halkyn Mountain Site of Special Scientific Interest and Special Area of Conservation.

European route E22: The European route E 22 is one of the longest European routes.  It has a length of about 5320 km .  Many of the E-roads have been extended into Asia since the year 2000; the E 22 was extended on 24 June 2002.

Northop Hall: Northop Hall is a large village near Mold, in Flintshire, Wales.  Located to the east of Northop, near the A55 North Wales Expressway, the village is largely residential in character.  At the 2001 Census, the village of Northop Hall had a population of 1,665, falling to 1,530 at the 2011 census.

Waen: Waen is a sparsely populated community in the Vale of Clwyd, in the Welsh county of Denbighshire.  It includes the hamlet of Waen Goleugoed.  The former civil parish was created in 1896 from the Flintshire portion of St Asaph, and lies on the eastern bank of the River Clwyd, 2.7 mi east of St Asaph, 15.4 mi north west of Mold, 5.1 mi north of Denbigh and 11.9 mi north of Ruthin.  At the 2001 census the community had a population of 245, falling slightly to 241 at the 2011 census.  The North Wales Expressway (A55) crosses the community from east to west, on its route from Chester to Bangor.

Calcoed: Calcoed is a small village in Flintshire, Wales.  It is located to the south west of the town of Holywell, to the north west of the village of Brynford and near the A55 road (North Wales Expressway).  It contains the Cynfaen Memorial Methodist Chapel and several houses.

Supporting paragraphs: A55 road European route E22
Answer: 2002