超化 in context: Street-network sprawl trends

Chao Hua in context

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
Chao Hua Henan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with 超化 plotted against Henan and China. The SNDi of new construction in 超化 fell steadily, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, 超化's incremental SNDi fell from 5.61 to 4.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, 超化 ranked 127th out of 129 cities in Henan and 1783rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.86
Rank in China
1606th of 1843
Rank in Henan
124th of 129

Entire Network (Aggregate)

SNDi value
5.74
Rank in China
1783rd of 1843
Rank in Henan
127th of 129

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

What about similarly populated cities?

45678<19751976–19901991–20052006–2020SNDi of street additions
45678<19751976–19901991–20052006–2020SNDi of entire street network
Chao Hua DashimiaoSeririt

In new street additions, 超化 built increasingly connected streets over time, while Dashimiao built increasingly disconnected streets from 1975 through 1991-2005, then improved and Seririt built increasingly disconnected streets over time. For the full network, 超化 became progressively more connected, while Dashimiao grew more disconnected from 1975 through 1991-2005, then improved and Seririt became progressively more disconnected. Notably, 超化 had a more sprawly network than Seririt in 1975 but the two have since reversed their relative ranking.