Jinhu County in context: Street-network sprawl trends

Jinhu County in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
Jinhu CountyJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jinhu County plotted against Jiangsu and China. The SNDi of new construction in Jinhu County peaked in 1991-2005, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Jinhu County's incremental SNDi fell from 3.88 to 2.99 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jinhu County ranked 59th out of 101 cities in Jiangsu and 1004th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.99
Rank in China
876th of 1843
Rank in Jiangsu
54th of 101

Entire Network (Aggregate)

SNDi value
2.97
Rank in China
1004th of 1843
Rank in Jiangsu
59th of 101

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

What about similarly populated cities?

1.62.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
Jinhu CountySoubreMascara

In new street additions, Jinhu County built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Soubré built increasingly disconnected streets over time and Mascara fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Notably, Jinhu County had a more connected network than Mascara in 1975 but the two have since reversed their relative ranking.