Shengshan in context: Street-network sprawl trends

Shengshan in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
ShengshanZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Shengshan plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Shengshan's incremental SNDi rose from 5.83 to 6.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Shengshan ranked 111th out of 116 cities in Zhejiang and 1790th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
6.71
Rank in China
1786th of 1843
Rank in Zhejiang
114th of 116

Entire Network (Aggregate)

SNDi value
5.94
Rank in China
1790th of 1843
Rank in Zhejiang
111th of 116

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
ShengshanBansiSri Muktsar Sahib

In new street additions, Shengshan fluctuated in its street-construction patterns, while Bansi built increasingly connected streets over time and Sri Muktsar Sahib built increasingly disconnected streets over time. For the full network, Shengshan fluctuated in connectivity, while Bansi became progressively more connected and Sri Muktsar Sahib became progressively more disconnected. Notably, Shengshan had a more connected network than Bansi in 1975 but the two have since reversed their relative ranking.