The situation is intricate and can be seen along the way. One part is already urban, on the Quartese side, since 2013. The other, from via San Paolo in Cagliari to the intersection with the Orientale sarda, remains the responsibility of Anas. The ring road 554 is old, dilapidated and, for long stretches, dangerous. It has changed, perhaps improved in some aspects, but the knots have not been completely untied, over the years.

The ring road is not long: about fifteen kilometers. But it is essential: pre-Covid data estimated that 40,000 cars would travel along it every day, enough to make it a real metropolitan road. But, judging from how it appears from the beginning, from the Via San Paolo junction in the hinterland direction, it is not easy to travel along .

There has been talk of renovating it for twenty years. Sometimes with the idea of building bridges and overpasses, other times with less innovative solutions. But the money is there .