Hengshan in context: Street-network sprawl trends

Hengshan in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
HengshanHeilongjiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hengshan plotted against Heilongjiang and China. The SNDi of new construction in Hengshan peaked in 1991-2005, compared to Heilongjiang which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Hengshan's incremental SNDi fell from 5.89 to 4.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hengshan ranked 62nd out of 67 cities in Heilongjiang as of 2020.

New Street Additions (2006–2020)

SNDi value
4.88
Rank in Heilongjiang
60th of 67

Entire Network (Aggregate)

SNDi value
3.41
Rank in Heilongjiang
62nd of 67

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

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
HengshanScunthorpeHakkari

In new street additions, Hengshan built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Scunthorpe built increasingly disconnected streets over time and Hakkâri fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend.