Gong'an in context: Street-network sprawl trends

Gong'an 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
Gong'anHubei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gong'an plotted against Hubei and China. The SNDi of new construction in Gong'an peaked in 1976-1990, compared to Hubei which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Gong'an's incremental SNDi fell from 3.27 to 2.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gong'an ranked 67th out of 77 cities in Hubei and 1507th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.86
Rank in China
779th of 1843
Rank in Hubei
28th of 77

Entire Network (Aggregate)

SNDi value
3.85
Rank in China
1507th of 1843
Rank in Hubei
67th of 77

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
Gong'anRaxaulHagen

While Raxaul and Hagen both built increasingly disconnected streets over time, Gong'an built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Raxaul and Hagen both became progressively more disconnected, while Gong'an grew more disconnected from 1975 through 1976-1990, then improved. Notably, Gong'an had a more sprawly network than Raxaul in 1975 but the two have since reversed their relative ranking.