Huichang in context: Street-network sprawl trends

Huichang in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
HuichangJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huichang plotted against Jiangxi and China. The SNDi of new construction in Huichang peaked in 1976-1990, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Huichang's incremental SNDi fell from 3.24 to 2.83 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huichang ranked 54th out of 82 cities in Jiangxi and 1058th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.83
Rank in China
760th of 1843
Rank in Jiangxi
42nd of 82

Entire Network (Aggregate)

SNDi value
3.04
Rank in China
1058th of 1843
Rank in Jiangxi
54th of 82

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
HuichangBolgatangaMontoya

In new street additions, Huichang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Bolgatanga built increasingly disconnected streets over time and Montoya built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Bolgatanga and Montoya both became progressively more disconnected, while Huichang grew more disconnected from 1975 through 1991-2005, then improved.