Hezhang in context: Street-network sprawl trends

Hezhang in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
HezhangGuizhou (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hezhang plotted against Guizhou and China. The SNDi of new construction in Hezhang rose steadily, compared to Guizhou which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Hezhang's incremental SNDi rose from 5.46 to 6.52 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hezhang ranked 39th out of 41 cities in Guizhou and 1777th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
6.52
Rank in China
1769th of 1843
Rank in Guizhou
41st of 41

Entire Network (Aggregate)

SNDi value
5.63
Rank in China
1777th of 1843
Rank in Guizhou
39th of 41

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
HezhangColatinaShuzi

In new street additions, Hezhang built increasingly disconnected streets over time, while Colatina built increasingly disconnected streets from 1975 through 1976-1990, then improved and Shuzi fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Hezhang and Colatina have been growing further apart in their street-network character since 1975.