Gao'an in context: Street-network sprawl trends

Gao'an in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
Gao'anJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gao'an plotted against Jiangxi and China. The SNDi of new construction in Gao'an 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, Gao'an's incremental SNDi fell from 2.24 to 1.64 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gao'an ranked 5th out of 82 cities in Jiangxi and 145th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.64
Rank in China
100th of 1843
Rank in Jiangxi
4th of 82

Entire Network (Aggregate)

SNDi value
1.84
Rank in China
145th of 1843
Rank in Jiangxi
5th of 82

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
Gao'anArerajGaborone

In new street additions, Gao'an built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Areraj built increasingly disconnected streets over time and Gaborone fluctuated in its street-construction patterns. For the full network, Gao'an grew more disconnected from 1975 through 1991-2005, then improved, while Areraj became progressively more disconnected and Gaborone became progressively more connected.