Jiajiang in context: Street-network sprawl trends

Jiajiang in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
JiajiangSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jiajiang plotted against Sichuan and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Jiajiang's incremental SNDi rose from 2.4 to 3.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiajiang ranked 23rd out of 98 cities in Sichuan and 576th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.18
Rank in China
987th of 1843
Rank in Sichuan
50th of 98

Entire Network (Aggregate)

SNDi value
2.49
Rank in China
576th of 1843
Rank in Sichuan
23rd of 98

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
Jiajiang51 farm of 12th divisionMudkhed

In new street additions, Jiajiang and 51 farm of 12th division both fluctuated in its street-construction patterns, while Mudkhed built increasingly disconnected streets over time. For the full network, Jiajiang and Mudkhed both became progressively more disconnected, while 51 farm of 12th division fluctuated in connectivity. Notably, Jiajiang had a more sprawly network than 51 farm of 12th division in 1975 but the two have since reversed their relative ranking.