The works of the first phase are around three kilometres long (2.7 km). The project also includes the remodelling of the junction connecting the Ártabra road with the N-VI, where today there are two large roundabouts embedded and with a pronounced 8-shaped camber. The new junction will have three levels. On the current level, a roundabout will be built where the exit and entry branches of the Ártabra road and the national road will meet, so that the Ártabra will cross underneath the roundabout. The N-VI will pass over it, on a viaduct with two lanes in each direction and a length of 1.2 kilometres.

The works are completed with another junction, that of the AC-221 road and the connection with the Espíritu Santo industrial estate, where another roundabout will be built over which a new dual carriageway will cross by means of a viaduct. From the roundabout there will be access to the AC-221 and the industrial estate with a new road with one lane in each direction and just over a kilometre in length.