Zhijiang in context: Street-network sprawl trends

Zhijiang in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zhijiang plotted against Hubei and China. The SNDi of new construction in Zhijiang peaked in 1991-2005, compared to Hubei which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Zhijiang's incremental SNDi fell from 4.22 to 2.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zhijiang ranked 65th out of 77 cities in Hubei as of 2020.

New Street Additions (2006–2020)

SNDi value
2.84
Rank in Hubei
27th of 77

Entire Network (Aggregate)

SNDi value
3.7
Rank in Hubei
65th of 77

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
ZhijiangFoggiaSalzburg

Zhijiang, Foggia, and Salzburg all built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street construction. Looking at the full network, Foggia and Salzburg both became progressively more disconnected, while Zhijiang grew more disconnected from 1975 through 1991-2005, then improved.