Cagliari in context: Street-network sprawl trends

Cagliari in context

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
CagliariSardegna (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Cagliari plotted against Sardegna and Italy. The SNDi of new construction in Cagliari rose steadily, compared to Sardegna which peaked in 1991-2005 and Italy which peaked in 1991-2005. Most recently, Cagliari's incremental SNDi rose from 3.53 to 3.68 between 1991-2005 and 2006-2020. In terms of the aggregate network, Cagliari ranked 1st out of 2 cities in Sardegna and 38th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.68
Rank in Italy
48th of 88
Rank in Sardegna
2nd of 2

Entire Network (Aggregate)

SNDi value
2.59
Rank in Italy
38th of 88
Rank in Sardegna
1st of 2

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
CagliariSapeleLos Mochis

While Sapele and Los Mochis both fluctuated in its street-construction patterns, Cagliari built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Cagliari and Sapele have been growing further apart in their street-network character since 1975.