北塘 in context: Street-network sprawl trends

Bei Tang in context

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
Bei Tang Tianjin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with 北塘 plotted against Tianjin and China. The SNDi of new construction in 北塘 peaked in 1976-1990, compared to Tianjin which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, 北塘's incremental SNDi fell from 7.01 to 3.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, 北塘 ranked 15th out of 16 cities in Tianjin and 1695th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.77
Rank in China
1297th of 1843
Rank in Tianjin
12th of 16

Entire Network (Aggregate)

SNDi value
4.77
Rank in China
1695th of 1843
Rank in Tianjin
15th of 16

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
Bei Tang Rio VerdeTiruchengodu

While Rio Verde and Tiruchengodu both built increasingly disconnected streets over time, 北塘 built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Rio Verde and Tiruchengodu both became progressively more disconnected, while 北塘 grew more disconnected from 1975 through 1976-1990, then improved. 北塘 and Rio Verde have been converging in their street-network character since 1975.