Chun'an County in context: Street-network sprawl trends

Chun'an County in context

3691215<19751976–19901991–20052006–2020SNDi of street additions
3691215<19751976–19901991–20052006–2020SNDi of entire street network
Chun'an CountyZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chun'an County plotted against Zhejiang and China. The SNDi of new construction in Chun'an County rose steadily, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Chun'an County's incremental SNDi rose from 5.74 to 13.83 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chun'an County ranked 115th out of 116 cities in Zhejiang and 1826th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
13.83
Rank in China
1838th of 1843
Rank in Zhejiang
116th of 116

Entire Network (Aggregate)

SNDi value
7.34
Rank in China
1826th of 1843
Rank in Zhejiang
115th of 116

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

What about similarly populated cities?

4812<19751976–19901991–20052006–2020SNDi of street additions
4812<19751976–19901991–20052006–2020SNDi of entire street network
Chun'an CountyBungomaMboloko

In new street additions, Chun'an County and Bungoma both built increasingly disconnected streets over time, while Mboloko built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Notably, Chun'an County had a more connected network than Bungoma in 1975 but the two have since reversed their relative ranking.