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?
Sentence (from "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.
Relevant evidence: No