Songzhuang in context: Street-network sprawl trends

Songzhuang in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
SongzhuangHebei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Songzhuang plotted against Hebei and China. The SNDi of new construction in Songzhuang was at its lowest in 1991-2005, compared to Hebei which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Songzhuang's incremental SNDi rose from 3.82 to 4.52 between 1991-2005 and 2006-2020. In terms of the aggregate network, Songzhuang ranked 110th out of 120 cities in Hebei and 1573rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.52
Rank in China
1539th of 1843
Rank in Hebei
103rd of 120

Entire Network (Aggregate)

SNDi value
4.1
Rank in China
1573rd of 1843
Rank in Hebei
110th of 120

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
SongzhuangFuyangMazatlan

While Fuyang and Mazatlán both fluctuated in its street-construction patterns, Songzhuang built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. For the full network, Songzhuang became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Fuyang fluctuated in connectivity and Mazatlán became progressively more disconnected. Songzhuang and Fuyang have been converging in their street-network character since 1975.