When Augustus went to Spain between 16 and 13 BC, he saw the need for roads and ordered the construction of the Via Augusta, the longest and most important road in Hispania. The road passed from near the southern tip of present-day Spain on the Atlantic to the Mediterranean through the Guadalquivir valley and along the coast to the Coll de Pertús (Latin: "Pertusium") pass in the Pyrenees. The Via Augusta linked Hispania Baetica in the south with the north of Hispania. The still extant Alcantarilla bridge, a double arched stone bridge over the River Salado in Utrera, about south of Seville, has an inscription on the cutwater of one of its pilings indicating that it was on the Via Augusta. The Romans built a fifteen-arched bridge over the River Baetis (the Guadalquivir) at Andújar on the Augustan road. In the second half of the 1st century, with the social stability brought by the Pax Romana, the Roman city of Carmo, now Carmona, became a major crossroads on the Via Augusta and an important outpost in the Roman empire. Several cities have traces of the roadbed, which roughly follows that of the current AP-7 motorway. There is a fairly long visible stretch in the municipality of El Perelló, in the province of Tarragona. The Arc de Berà is located on the section that passed just south of the city. The strategic position of Roman Barcelona (Barcino) on a spur road of the Via Augusta allowed the city's commercial and economic development. In Barcelona, the ancient Via Augusta corresponds to one of the main avenues, also called "Via Augusta", in the Sarrià-Sant Gervasi district, which connects the Avinguda Diagonal with the Vallvidrera tunnels, passing through Plaça Molina. A large part of line 6 of the Generalitat of Catalonia Railways passes underneath the Via Augusta roadbed. The Roman Arch of Cabanes, in the flat area known as Pla de l'arc, northwest of Castellón in the Valencian Country, crosses the Via Augusta, which followed the inland valley in the province. This arch is now located in a roundabout of the CV-157 that still retains a certain resemblance to the appearance of the ancient Roman roads due to the rows of trees lining both sides of the highway, although the original route of the Via Augusta, which today is marked in many regions as a livestock route, does not always coincide with the current