Huili in context: Street-network sprawl trends

Huili in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
HuiliSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huili plotted against Sichuan and China. The SNDi of new construction in Huili peaked in 1991-2005, compared to Sichuan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Huili's incremental SNDi fell from 3.31 to 2.87 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huili ranked 32nd out of 98 cities in Sichuan and 876th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.87
Rank in China
795th of 1843
Rank in Sichuan
35th of 98

Entire Network (Aggregate)

SNDi value
2.82
Rank in China
876th of 1843
Rank in Sichuan
32nd of 98

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
HuiliBellampalliChandrakona Road

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