Sanshui in context: Street-network sprawl trends

Sanshui in context

3.64.55.46.3<19751976–19901991–20052006–2020SNDi of street additions
3.64.55.46.3<19751976–19901991–20052006–2020SNDi of entire street network
SanshuiGuangdong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sanshui plotted against Guangdong and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Sanshui's incremental SNDi rose from 3.48 to 6.22 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sanshui ranked 106th out of 133 cities in Guangdong and 1650th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
6.22
Rank in China
1751st of 1843
Rank in Guangdong
117th of 133

Entire Network (Aggregate)

SNDi value
4.46
Rank in China
1650th of 1843
Rank in Guangdong
106th of 133

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
SanshuiMakeniSeweding

While Makeni and Seweding both built increasingly disconnected streets over time, Sanshui fluctuated in its street-construction patterns in new street additions. Looking at the full network, Makeni and Seweding both became progressively more disconnected, while Sanshui fluctuated in connectivity. Notably, Sanshui had a more sprawly network than Makeni in 1975 but the two have since reversed their relative ranking.