Messina in context: Street-network sprawl trends

Messina in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
MessinaSicily (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Messina plotted against Sicily and Italy. While Sicily and Italy both peaked in 1991-2005, Messina's new street additions peaked in 1991-2005. Most recently, Messina's incremental SNDi fell from 7.27 to 5.67 between 1991-2005 and 2006-2020. In terms of the aggregate network, Messina ranked 8th out of 8 cities in Sicily and 77th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
5.67
Rank in Italy
83rd of 88
Rank in Sicily
7th of 8

Entire Network (Aggregate)

SNDi value
3.48
Rank in Italy
77th of 88
Rank in Sicily
8th of 8

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
MessinaChishtian SharifBradenton

In new street additions, Messina built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Chishtian Sharif built increasingly disconnected streets over time and Bradenton built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend.