Weiyuan in context: Street-network sprawl trends

Weiyuan in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Weiyuan plotted against Sichuan and China. The SNDi of new construction in Weiyuan was at its lowest in 1976-1990, 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, Weiyuan's incremental SNDi rose from 1.24 to 2.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Weiyuan ranked 6th out of 98 cities in Sichuan and 128th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.86
Rank in China
784th of 1843
Rank in Sichuan
34th of 98

Entire Network (Aggregate)

SNDi value
1.79
Rank in China
128th of 1843
Rank in Sichuan
6th of 98

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
WeiyuanPingheBagelen

In new street additions, Weiyuan built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Pinghe built increasingly disconnected streets from 1975 through 1976-1990, then improved and Bagelen built increasingly disconnected streets over time. For the full network, Weiyuan became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Pinghe grew more disconnected from 1975 through 1991-2005, then improved and Bagelen became progressively more disconnected. Weiyuan and Bagelen have been growing further apart in their street-network character since 1975.