Sanhe in context: Street-network sprawl trends

Sanhe in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
SanheAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sanhe plotted against Anhui and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Sanhe's incremental SNDi rose from 3.74 to 4.33 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sanhe ranked 64th out of 74 cities in Anhui as of 2020.

New Street Additions (2006–2020)

SNDi value
4.33
Rank in Anhui
63rd of 74

Entire Network (Aggregate)

SNDi value
3.66
Rank in Anhui
64th of 74

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
SanheMbaliziBirganj

In new street additions, Sanhe and Mbalizi both fluctuated in its street-construction patterns, while Birganj 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, Sanhe had a more connected network than Mbalizi in 1975 but the two have since reversed their relative ranking.