Length: 113 km
Completion: 1998
The A3 motorway is the main link to the north of Spain. The motorway starts at the Oporto Ring Road, and after leaving the A4 motorway at Águas Santas, it crosses the fertile region of Santo Tirso and Famalicão, approaching the city of Braga, also called the city of the archbishops. From Braga, the A3 motorway continues through Ponte de Lima, where it starts the magnificent crossing of Serra de Arga, continuing towards the valley of the Minho River, in Valença, up to Galicia in Spain.