Changling in context: Street-network sprawl trends

Changling in context

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
ChanglingChongqing (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changling plotted against Chongqing and China. The SNDi of new construction in Changling was at its lowest in 1991-2005, compared to Chongqing which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Changling's incremental SNDi rose from 5.06 to 9.27 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changling ranked 44th out of 47 cities in Chongqing and 1834th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
9.27
Rank in China
1822nd of 1843
Rank in Chongqing
45th of 47

Entire Network (Aggregate)

SNDi value
7.72
Rank in China
1834th of 1843
Rank in Chongqing
44th of 47

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
ChanglingIrvingCurup

In new street additions, Changling built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Irving built increasingly disconnected streets from 1975 through 1991-2005, then improved and Curup fluctuated in its street-construction patterns. Looking at the full network, Irving and Curup both became progressively more disconnected, while Changling became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Changling and Irving have been converging in their street-network character since 1975.