Susong in context: Street-network sprawl trends

Susong in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
SusongAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Susong plotted against Anhui and China. The SNDi of new construction in Susong peaked in 1991-2005, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Susong's incremental SNDi fell from 2.75 to 2.7 between 1991-2005 and 2006-2020. In terms of the aggregate network, Susong ranked 41st out of 74 cities in Anhui and 677th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.7
Rank in China
660th of 1843
Rank in Anhui
37th of 74

Entire Network (Aggregate)

SNDi value
2.62
Rank in China
677th of 1843
Rank in Anhui
41st of 74

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
SusongSumenepKarang Kliwon

In new street additions, Susong built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Sumenep fluctuated in its street-construction patterns and Karang Kliwon built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend.