Dandong in context: Street-network sprawl trends

Dandong in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
DandongLiaoning (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dandong plotted against Liaoning and China. The SNDi of new construction in Dandong peaked in 1991-2005, compared to Liaoning which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Dandong's incremental SNDi fell from 5.69 to 5.5 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dandong ranked 54th out of 61 cities in Liaoning and 1528th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.5
Rank in China
1706th of 1843
Rank in Liaoning
59th of 61

Entire Network (Aggregate)

SNDi value
3.92
Rank in China
1528th of 1843
Rank in Liaoning
54th of 61

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
DandongRajshahiLa Plata

While Rajshahi and La Plata both fluctuated in its street-construction patterns, Dandong built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full network, Dandong and La Plata both became progressively more disconnected, while Rajshahi fluctuated in connectivity. Dandong and Rajshahi have been converging in their street-network character since 1975.