Jiashan in context: Street-network sprawl trends

Jiashan in context

3.54.24.95.6<19751976–19901991–20052006–2020SNDi of street additions
3.54.24.95.6<19751976–19901991–20052006–2020SNDi of entire street network
JiashanZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jiashan plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Jiashan's incremental SNDi rose from 4.1 to 5.25 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiashan ranked 104th out of 116 cities in Zhejiang and 1700th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.25
Rank in China
1669th of 1843
Rank in Zhejiang
108th of 116

Entire Network (Aggregate)

SNDi value
4.81
Rank in China
1700th of 1843
Rank in Zhejiang
104th of 116

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
JiashanAsmaraCorrientes

In new street additions, Jiashan and Corrientes both fluctuated in its street-construction patterns, while Asmara built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Asmara and Corrientes both became progressively more disconnected, while Jiashan fluctuated in connectivity.