Santai in context: Street-network sprawl trends

Santai in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
SantaiSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Santai plotted against Sichuan and China. The SNDi of new construction in Santai was at its lowest in 1991-2005, 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, Santai's incremental SNDi rose from 1.94 to 2.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Santai ranked 18th out of 98 cities in Sichuan and 445th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.34
Rank in China
413th of 1843
Rank in Sichuan
15th of 98

Entire Network (Aggregate)

SNDi value
2.31
Rank in China
445th of 1843
Rank in Sichuan
18th of 98

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
SantaiQianjiangGarcia

While Qianjiang and García both fluctuated in its street-construction patterns, Santai built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. For the full network, Santai became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Qianjiang became progressively more disconnected and García fluctuated in connectivity. Notably, Santai had a more sprawly network than Qianjiang in 1975 but the two have since reversed their relative ranking.