Parma in context: Street-network sprawl trends

Parma in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
ParmaEmilia-Romagna (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Parma plotted against Emilia-Romagna and Italy. The SNDi of new construction in Parma rose steadily, compared to Emilia-Romagna which peaked in 1991-2005 and Italy which peaked in 1991-2005. Most recently, Parma's incremental SNDi rose from 3.03 to 3.36 between 1991-2005 and 2006-2020. In terms of the aggregate network, Parma ranked 6th out of 10 cities in Emilia-Romagna and 36th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.36
Rank in Italy
41st of 88
Rank in Emilia-Romagna
7th of 10

Entire Network (Aggregate)

SNDi value
2.58
Rank in Italy
36th of 88
Rank in Emilia-Romagna
6th of 10

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

What about similarly populated cities?

2.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ParmaSharixonMehdawal

While Sharixon and Mehdawal both fluctuated in its street-construction patterns, Parma built increasingly disconnected streets over time in new street additions. Looking at the full network, Sharixon and Mehdawal both fluctuated in connectivity, while Parma became progressively more disconnected. Parma and Mehdawal have been growing further apart in their street-network character since 1975.