Hegang in context: Street-network sprawl trends

Hegang in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
HegangHeilongjiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hegang plotted against Heilongjiang and China. The SNDi of new construction in Hegang rose steadily, compared to Heilongjiang which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Hegang's incremental SNDi rose from 3.54 to 3.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hegang ranked 42nd out of 67 cities in Heilongjiang and 778th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.61
Rank in China
1197th of 1843
Rank in Heilongjiang
41st of 67

Entire Network (Aggregate)

SNDi value
2.73
Rank in China
778th of 1843
Rank in Heilongjiang
42nd of 67

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
HegangAzamgarhShaoyang

In new street additions, Hegang built increasingly disconnected streets over time, while Azamgarh built increasingly disconnected streets from 1975 through 1991-2005, then improved and Shaoyang built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Hegang became progressively more disconnected, while Azamgarh grew more disconnected from 1975 through 1991-2005, then improved and Shaoyang grew more disconnected from 1975 through 1976-1990, then improved. Hegang and Shaoyang have been converging in their street-network character since 1975.