Weihui in context: Street-network sprawl trends

Weihui in context

33.64.2<19751976–19901991–20052006–2020SNDi of street additions
33.64.2<19751976–19901991–20052006–2020SNDi of entire street network
WeihuiHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Weihui plotted against Henan and China. The SNDi of new construction in Weihui peaked in 1976-1990, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Weihui's incremental SNDi fell from 2.89 to 2.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Weihui ranked 97th out of 129 cities in Henan and 1017th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.62
Rank in China
604th of 1843
Rank in Henan
74th of 129

Entire Network (Aggregate)

SNDi value
2.99
Rank in China
1017th of 1843
Rank in Henan
97th of 129

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

What about similarly populated cities?

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
WeihuiJongphyongGirardot

In new street additions, Weihui built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Jongphyong built increasingly disconnected streets from 1975 through 1991-2005, then improved and Girardot fluctuated in its street-construction patterns. For the full network, Weihui grew more disconnected from 1975 through 1976-1990, then improved, while Jongphyong grew more disconnected from 1975 through 1991-2005, then improved and Girardot fluctuated in connectivity. Weihui and Jongphyong have been growing further apart in their street-network character since 1975.