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?
A55 road:  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).
i don't know