sentences:  This C-31's section corresponds to a part of the former A-19 "autopista", also known as Autopista del Maresme, which was the first "autopista" ever in Spain (1969).It starts at Barcelona's Plaça de les Glòries and runs parallel to the coastline passing through the city of Badalona and finishing at the intersection with the B-20 and the C-32, at Montgat.This highway section should continue over the actual N-II, at the "comarca" of Maresme, but since this road is managed by the Spanish government, it has not been renamed yet.