Huai'an District in context: Street-network sprawl trends

Huai'an District in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
Huai'an DistrictJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huai'an District plotted against Jiangsu and China. The SNDi of new construction in Huai'an District peaked in 1976-1990, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Huai'an District's incremental SNDi fell from 3.89 to 3.38 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huai'an District ranked 85th out of 101 cities in Jiangsu and 1431st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.38
Rank in China
1099th of 1843
Rank in Jiangsu
68th of 101

Entire Network (Aggregate)

SNDi value
3.62
Rank in China
1431st of 1843
Rank in Jiangsu
85th of 101

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
Huai'an DistrictHamhungJoharabad

In new street additions, Huai'an District built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Hamhung built increasingly disconnected streets from 1975 through 1991-2005, then improved and Joharabad built increasingly disconnected streets over time. For the full network, Huai'an District and Hamhung both grew more disconnected from 1975 through 1991-2005, then improved, while Joharabad became progressively more disconnected. Huai'an District and Joharabad have been converging in their street-network character since 1975.