Duqiao in context: Street-network sprawl trends

Duqiao in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
DuqiaoZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Duqiao plotted against Zhejiang and China. The SNDi of new construction in Duqiao peaked in 1991-2005, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Duqiao's incremental SNDi fell from 3.19 to 1.54 between 1991-2005 and 2006-2020. In terms of the aggregate network, Duqiao ranked 34th out of 116 cities in Zhejiang and 596th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.54
Rank in China
81st of 1843
Rank in Zhejiang
3rd of 116

Entire Network (Aggregate)

SNDi value
2.51
Rank in China
596th of 1843
Rank in Zhejiang
34th of 116

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
DuqiaoMaiharMahagi

While Maihar and Mahagi both built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, Duqiao built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, Maihar and Mahagi both became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Duqiao grew more disconnected from 1975 through 1991-2005, then improved. Duqiao and Maihar have been converging in their street-network character since 1975.